LATIN DICTIONARYLexicon Latīnum
noun · femininethird declension

cōs1

cōs f (genitive cōtis)
Classical[ˈkoːs]Ecclesiastical[ˈkɔs]

Meaning

  1. whetstone

Declension

declension
formsingularplural
nominativecōscōtēs
genitivecōtiscōtum
dativecōtīcōtibus
accusativecōtemcōtēs
ablativecōtecōtibus
vocativecōscōtēs

cōs, cōtis, f. Sanscr. ça, to whet, sharpen; cf. cautes,
I. any hard stone, flintstone, Cic. Div. 1, 17, 33; Liv. 1, 36, 4 and 5; Curt. 4, 6, 8; 5, 3, 8; 8, 11, 23; Verg. E. 8, 43. —
II. In partic., a whetstone, hone, grindstone, Plin. 36, 22, 47, § 164; Hor. C. 2, 8, 16; Quint. 2, 12, 8.—
B. Trop.: ipsam iracundiam fortitudinis quasi cotem esse dicebant, Cic. Ac. 2, 44, 135; cf. id. Tusc. 4, 19, 43; Hor. A. P. 304.

Origins

From Proto-Italic *kōtis, from Proto-Indo-European *ḱeh₃- (“to sharpen”). Cognate with Latin catus (“clever, cunning”), cautēs (“pointed rock”), cuneus (“wedge”) and Ancient Greek κῶνος (kônos, “cone”).

Descendants
  • Catalancot
  • Frenchqueux
  • Italiancote
  • Italiancotano
  • Romaniancute
  • Spanishcodón
  • Megleno-Romaniancuti
  • Siciliancuti
proper noun · femininesecond declension
Cōs2
Cōs f sg (genitive Coī)
Classical[ˈkoːs]Ecclesiastical[ˈkɔs]

Meaning

  1. Kos

Declension

declension
formsingularplural
nominativeCōs—
genitiveCōī—
dativeCōō—
accusativeCōum—
ablativeCōō—
vocativeCōe—
locativeCōī—

Cōs or Cŏus (Cō^ŏs), i, f., = Κῶς or Κόως,
I. one of the Sporadic Islands in the Myrtoan Sea, on the coast of Caria, celebrated for the cultivation of the vine and for weaving; the birthplace of Hippocrates, Apelles, and Philetas, now Stanco.; nom. Cos, Varr. Fragm. p. 363 Bip.; Mel. 2, 7, 4; Plin. 5, 31, 36, § 135 al.: Cous, Liv. 37, 16, 2. —Acc. Coum, Curt. 3, 1, 19 Zumpt N. cr.; Plin. 2, 108, 112, § 245; Tac. A. 2, 75.—Abl. Coo, Cic. Att. 9, 9, 2; Plin. 13, 1, 2, § 5; Stat. S. 1, 2, 252: Co, Plin. 11, 23, 27, § 77; Quint. 8, 6, 7 (but in the last two pass. with the var. lect. Coo).—Hence,
II. Cōus, a, um, adj., = Κῶος, of Cos, Coan: insula, Varr. R. R. 2, prooem. § 4: litus, Luc. 8, 246: vinum, Plin. 14, 8, 10, § 79: uva, id. 15, 17, 18, § 66: vestis, Prop. 1, 2, 2; 2, 1, 6: purpurae, Hor. C. 4, 13, 13; cf. Prop. 4 (5), 5, 23. artifex, i. e. Apelles, Ov. P. 4, 1, 29.—Hence, also: Venus, a celebrated picture of her by Apelles, Cic. Or. 2, 5; id. Div. 1, 13, 23: senior, i. e. Hippocrates, Marc. Emp. Carm. 5: poëta, Philetas, Ov. A. A. 3, 329; cf. Prop. 3 (4), 1, 1; and absol., Ov. R. Am. 760.—
B. Subst.,
1. Cōum, i, n. (sc. vinum), Coan wine, Hor. S. 2, 4, 29; Pers. 5, 135.—
2. Cōa, ōrum, n., Coan garments, Hor. S. 1, 2, 101; Ov. A. A. 2, 298.

Origins

Borrowed from Ancient Greek Κῶς (Kôs).

In the Academy Smith's classical dictionaries

GeographyCosCos (Κῶς, Κόως; Cos, P. Mela; Cous, Liv., Tac.; Cea, Plin.: Eth. Κῶος (Κώτης in modern Greek): Stanko, or Stanchio, a corruption of ἐς τὰν Κῶ), an isl…

Quick answers

What does cōs mean in Latin?
cōs, a noun, means “whetstone”.
What is the genitive of cōs?
The genitive singular is cōtis. cōs is feminine, third declension.
How do you pronounce cōs?
In classical Latin, [ˈkoːs]; in ecclesiastical (church) Latin, [ˈkɔs].