LATIN DICTIONARYLexicon Latīnum
proper noun · masculinethird declension

Castor1

Castor m sg (genitive Castoris)
Classical[ˈkas.tɔr]Ecclesiastical[ˈkas.tor]

Meaning

  1. GreekmasculinesingularCastor
    𐌂𐌀𐌔𐌕𐌏𐌓𐌄𐌉:𐌐𐌏𐌃𐌋𐌏𐌖𐌒𐌖𐌄𐌉𐌒𐌖𐌄 / 𐌒𐌖𐌓𐌏𐌉𐌔To Castor and Pollux/Polydeuces, the Dioscuri.6th–5th century BCE, dedication to Castor and Pollux, Lavinium, Latium, →JSTOR:
  2. masculinesingularThe star α Geminorum in the constellation Gemini.

Declension

declension
formsingularplural
nominativeCastor—
genitiveCastoris—
dativeCastorī—
accusativeCastorem—
ablativeCastore—
vocativeCastor—

Castor, ŏris (acc. to some gramm. Castōris, Quint. 1, 5, 60), m., = Κάστωρ.
I. The son of the Spartan king Tyndarus and Leda, brother of Helena and Pollux, with whom, as twin star (Gemini; hence even Castores, Plin. 10, 43, 60, § 121; 35, 4, 10, § 27; 7, 22, 22, § 86; and: alter Castor, Stat. S. 4, 6, 16), he served as a guide to mariners, Varr. L. L. 5, § 58; Cic. N. D. 2, 2, 6; 3, 18, 45; Hor. Ep. 2, 1, 5; id. Epod. 17, 42; 17, 43; id. C. 4, 5, 35: gaudet equis, id. S. 2, 1, 26; cf. id. C. 1, 12, 25, and Ov. M. 12, 401: ad Castoris (sc. aedem), on the forum, Cic. Mil. 33, 91; where pecuniary affairs were transacted, id. Quint. 4, 17; cf. Juv. 14, 260.—
II. Derivv.
A. In oaths: ecastor and mecastor the old interj. e or the pron. acc. me, prefixed; cf.: equidem, edepol; mehercle, medius fiduis, etc., v. Corss. Ausspr. II. p. 856 sq., by Castor, an oath in very frequent use, especially by women, though not exclusively by them, as asserted by Gell. 11, 6, 1, and Charis. p. 183 P.; cf. Plaut. As. 5, 2, 46; 5, 2, 80; id. Cas. 5, 4, 13: ecastor, re experior, quanti facias uxorem tuam, id. Am. 1, 3, 10; 1, 3, 39; id. Cist. 4, 2, 61; id. Truc. 2, 5, 28; id. Poen. 1, 2, 71; id. Stich. 1, 3, 89; id. As. 1, 3, 36; id. Truc. 2, 2, 60; id. As. 3, 1, 30; id. Stich. 1, 3, 81: ecastor vero, id. Merc. 4, 1, 25: per ecastor scitus (i. e. perscitus ecastor) puer est natus Pamphilo, Ter. And. 3, 2, 6: nec nunc mecastor quid hero ego dicam queo comminisci, Plaut. Aul, 1, 1, 28; cf. id. Merc. 4, 1, 6; id. Cas. 2, 3, 30; id. Men. 4, 2, 50; id. Mil. 1, 1, 63; cf. also id. Stich. 1, 3, 86; id. Truc. 2, 2, 36; 2, 7, 30; 3, 2, 11; 4, 4, 9; 5, 1, 26: Sy. Salve, mecastor, Parmenio. Pa. Et tu, edepol, Syra, Ter. Hec. 1, 2, 8 Don. —
B. Ad Castŏris or Lŏcus Ca-stŏrum, nom. propr., a place in Upper Italy, between Cremona and Bedriacum, where stood a shrine of Castor and Pollux, Suet. Oth. 9; Tac. H. 2, 24.—
C. Castŏrĕus, a, um, adj. of Castor: manus, Sen. Hippol. 810.—
III. A companion of Æneas, Verg. A. 10, 124.—
IV. The grandson of king Deiotarus, Cic. Deiot. 1, 2, 10; 1, 2, 28 sq.—
V. Castor Tarcondarius, a chieftain of Gallogrœcia, ally of Pompey, Caes. B. C. 3, 4.—
VI. Antonius Castor, an author on botany, Plin. 25, 17, 66, § 174; 25, 2, 5, § 9.

Origins

Borrowed from Ancient Greek Κᾰ́στωρ (Kắstōr).

In the Academy Smith's classical dictionaries

noun · masculinethird declension
castor2
castor m (genitive castoris)
Classical[ˈkas.tɔr]Ecclesiastical[ˈkas.tor]

Meaning

  1. masculinebeaver

Declension

declension
formsingularplural
nominativecastorcastorēs
genitivecastoriscastorum
dativecastorīcastoribus
accusativecastoremcastorēs
ablativecastorecastoribus
vocativecastorcastorēs

castor, ŏris, m., = κάστωρ,
I. the castor, beaver; pure Lat. fiber: Castor fiber, Linn.; Plin. 32, 3, 13, § 26; cf. id. 8, 30, 47, § 109; Cic. ap. Isid. Orig. 12, 2, 21; Ov. Nux. 166; acc. castorem, App. M. 1, p. 106, 10: castora, Juv. 12, 34.

Origins

From Ancient Greek κάστωρ (kástōr), from Doric Greek κάστον (káston, “wood”). See also Sanskrit कस्तूरी (kastūrī, “musk”).

Descendants
  • Catalancastor
  • Frenchcastorfrom Old French castor
  • Englishcastorfrom Old French castor
  • Italiancastoro
  • Portuguesecastor
  • Romaniancastor
  • Spanishcastor
  • Friuliancastôr
  • Galiciancastor

Quick answers

What does Castor mean in Latin?
Castor, a proper noun, means “Castor; The star α Geminorum in the constellation Gemini.”.
What is the genitive of Castor?
The genitive singular is Castoris. Castor is masculine, third declension.
How do you pronounce Castor?
In classical Latin, [ˈkas.tɔr]; in ecclesiastical (church) Latin, [ˈkas.tor].