What is the Latin word for coop?

The usual Latin words for “coop” are cūpa, sagīnārium. The right choice depends on the sense; see the distinctions below.

English → Latin

“coop” in Latin

cūpatub, cask, tun, vat sagīnāriuma feeding-stall, place where animals are fattened

The English word coop itself goes back to Latin caupō, through cupa.

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

coop

Barrel, cupa.

Cage for poultry, saginarium (e.g., includent in saginario; in this instance, for geese, Varr., R.R., 3, 10, quite at the end). COOP UP, Vid: to SHUT UP.

Quick answer

What is the Latin word for coop?: The usual Latin words for “coop” are cūpa, sagīnārium. 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.