Latin

Noun

acus f ‎(genitive acūs); fourth declension

1. a needle, a pin
2. bodkin

Inflection

Fourth declension.

Derived terms

Descendants

References

• acus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• acus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• ACUS in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• Félix Gaffiot (1934), “acus”, in Dictionnaire Illustré Latin-Français, Paris: Hachette.
• Meissner, Carl; Auden, Henry William (1894) Latin Phrase-Book, London: Macmillan and Co.
  • you have hit the nail on the head: rem acu tetigisti
    
• acus in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• acus in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin