ago

Forms

ago m (plural aghi or (Old Italian) agora)^[1] The old and poetic form Old Italian aco belongs to the central and southern dialects and reaches into the Arezzo area.^[2][3] The old plural Old Italian agora was feminine.^[4][5]

Etymology

It is inherited from Latin acus (“needle, pin”), through the earlier form Old Italian aco.^[6][7][8][1] The voiced /ɡ/ is the northern lenition of /k/; the forms with /k/ survive south of the La Spezia–Rimini line, and the voiced type of standard Italian probably came from the Veneto, Romagna or western Tuscany.^[3][9] The Latin noun was a feminine of the fourth declension: the feminine survives in Sardinia and in conservative parts of central and southern Italy, while elsewhere it became masculine, and the old plural ⟨agora⟩ follows the type in -ora.^[9]

The simple word continues in Sardinian agu and Romanian ac, while the other Romance languages took the diminutive Latin acucula: French aiguille, Occitan agulha, Catalan agulla, Spanish aguja and Portuguese agulha.^[7][9]

The Latin noun belongs to the root Proto-Indo-European *h₂eḱ- (“sharp”), which also gave acūtus (“sharp”), acidus (“sour”) and ācer (“sharp”), and Ancient Greek ἀκμή (akmḗ, “point”).^[7][1] De Vaan regards the noun for “needle” as a separate formation on the nominal root, beside the old u-stem adjective seen in acuō (“to sharpen”).^[10][1]

Earliest recorded meaning

DELI dates the sewing needle, a small pointed steel rod with an eye for the thread, to Pier della Vigna, before 1249; the TLIO's first record is a Sienese letter of 1269.^[6][11] Guido Guinizelli, before 1276, already used it for the pointer of a measuring instrument.^[6]

Semantic evolution

In Old Italian the word also named the pointer of a balance, the magnetic needle of the compass and an insect's sting, and figuratively a thing of no value.^[11][6] Dante, before 1321, used it for the sting of bees and wasps, and in the Inferno speaks of the women who left the needle, the shuttle and the spindle to become soothsayers.^[6][4]

Latin acus also named a fish, as a calque of Ancient Greek βελόνη (belónē), and Italian ago has meant the garfish since Serdonati (1589).^[2][12] D'Annunzio applied the word to the leaves of conifers in 1903.^[6] Modern Italian uses it for the hollow needle of a syringe, the movable rail of a railway switch and the hand of a dial, and ago della bilancia figuratively for whoever decides an uncertain contest.^[8][13][5]

Timeline

• Before 1249 – Pier della Vigna uses ago for the sewing needle.^[6]
• 1269 – A Sienese letter has the word.^[11]
• Before 1276 – Guido Guinizelli uses it for the pointer of an instrument.^[6]
• Before 1321 – Dante uses it for the sting of bees and wasps.^[6]
• 1589 – Serdonati records ago as the name of the garfish.^[12]
• 1797 – The adjective aghiforme is recorded.^[7]
• 1805 – Agopuntura “acupuncture” is recorded.^[7]
• 1903 – D'Annunzio uses ago for a conifer leaf.^[6]

Meanings

Noun

1. A needle for sewing: a thin pointed rod, usually of steel, with an eye at one end for the thread.^[8][14]
2. (medicine) A hollow needle used with a syringe to inject or draw off fluids.^[8][15]
3. A thin rod, usually metal, with various functions in a device: valvola ad ago.^[8]
4. The pointer or needle of a measuring instrument: ago della bussola, ago della bilancia.^[8][13]
5. (botany) The needle-shaped leaf of a conifer.^[8][14]
6. (popular) The sting of bees, wasps and similar insects.^[8][13]
7. (mountaineering) An isolated, roughly conical rock pinnacle.^[8]
8. The garfish, a fish also called aguglia.^[8][12]
9. (mineralogy) A needle-shaped crystal.^[8][5]

Word family

• aghetto
• aghino
• aghifoglia
• aghiforme
• agopuntura
• agoraio

Related words

• agucchia
• aguglia
• guglia
• acuto
• acido
• acciaio
• Latin acus
• French aiguille

Usage notes

Cercare un ago in un pagliaio “to look for a needle in a haystack” means to attempt something impossible, and essere l'ago della bilancia means to be the one who decides an uncertain situation.^[13][16] After a noun, ago forms the name pesce ago “pipefish”.^[14][13] Ago. is also an abbreviation of agosto “August”.^[1]

References

1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 92
3. ^ a b Devoto, Giacomo (1968), Avviamento alla etimologia italiana: dizionario etimologico, 2nd ed., Firenze: Le Monnier
4. ^ a b Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca, p. 1, 263
5. ^ a b c Vocabolario della lingua italiana Treccani (2011), Roma: Istituto della Enciclopedia Italiana
6. ^ a b c d e f g h i j Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
7. ^ a b c d e Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
8. ^ a b c d e f g h i j k De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
9. ^ a b c Pfister, Max; Schweickard, Wolfgang; Prifti, Elton (eds.) (1979–), Lessico Etimologico Italiano, Wiesbaden: Reichert; online at lei-digitale.it, p. 1, 558
10. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
11. ^ a b c Tesoro della Lingua Italiana delle Origini (1997–), Opera del Vocabolario Italiano, CNR, Firenze; tlio.ovi.cnr.it
12. ^ a b c Pfister, Max; Schweickard, Wolfgang; Prifti, Elton (eds.) (1979–), Lessico Etimologico Italiano, Wiesbaden: Reichert; online at lei-digitale.it, p. 1, 572
13. ^ a b c d e Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
14. ^ a b c Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
15. ^ Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
16. ^ Gabrielli, Aldo (2020), Grande dizionario italiano, digital ed., Milano: Hoepli