LATIN DICTIONARYLexicon Latīnum
noun · masculinesecond declension

contus

contus m (genitive contī)

Meaning

  1. masculinelong pole; pike
    Praefixa contīs capita gestābantur inter signa cohortium iū̆xtā aquilam legiōnis...Heads attached to the points of pikes were being carried about next to the [heralidic] eagle of the legion...c. 100 CE – 110 CE, Tacitus, Historiae 1.44

Latīnē defined in Latin in our graded readers

pertica nāvigantium
contus -ī (m) — in Epistulae, ch. 7

Declension

declension
formsingularplural
nominativecontuscontī
genitivecontīcontōrum
dativecontōcontīs
accusativecontumcontōs
ablativecontōcontīs
vocativecontecontī

contus, i, m., = κοντός,
I. a pole, pike (perh. not ante-Aug.), as an implement of a boat or ship, Verg. A. 5, 208; 6, 302; Tac. A. 14, 5; Suet. Calig. 32; as a weapon, Verg. A. 9, 510; Tac. A. 6, 35; id. H. 1, 44.—Prov.: non contis et remulco ferri, ut aiunt, sed velificatione plenā, Amm. 18, 5, 6: pedalis, i. q. membrum virile, Auct. Priap. 10, 3.

Origins

Proto-Indo-European *ḱent-der. Ancient Greek κοντός (kontós)bor. Latin contus Borrowed from Ancient Greek κοντός (kontós, “pole, pike”), from κεντέω (kentéō, “to sting, goad”).

In the Academy Smith's classical dictionaries

AntiquitiesContusContus (κοντός, from κεντέω, to prick or pierce) was, as Nonius (p. 555 m., 18.24) expresses it, hasta longior et robusta, with a pointed iron at the …

Quick answers

What does contus mean in Latin?
contus, a noun, means “long pole; pike”.
What is the genitive of contus?
The genitive singular is contī. contus is masculine, second declension.