What is the Latin word for man-of-war?

The usual Latin words for “man-of-war” are quīnquerēmis, plagiārius. The right choice depends on the sense; see the distinctions below.

English → Latin

“man-of-war” in Latin

quīnquerēmis5-oared; 5-manned oars plagiāriustorturer, oppressor, plunderer; kidnapper; plagiarist

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

man-of-war

navis bellica (general term, poetical): navis longa, navis rostrata, quinqueremis (particular kinds of ships of war with the ancients; especially as opposed to navis rotunda, a merchant ship). MAN-STEALER, plagiarius (Cic.).

Quick answer

What is the Latin word for man-of-war?: The usual Latin words for “man-of-war” are quīnquerēmis, plagiārius. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.