What is the Latin word for poniard?

The usual Latin words for “poniard” are pūgiō, sīca. The right choice depends on the sense; see the distinctions below.

English → Latin

“poniard” in Latin

pūgiōa dagger sīcaa dagger, dirk, poniard; the edge of a boar's tusk

The English word poniard itself goes back to Latin pugnus.

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

poniard s.

pugio (a stiletto, dagger): sica (a short weapon; used by banditti): to use a poniard, sicam vibrare; sicam intentare alicui, pugione petere aliquem. Vid: SWORD.

poniard v.

aliquem pugione percutere.

Quick answer

What is the Latin word for poniard?: The usual Latin words for “poniard” are pūgiō, sīca. 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.