Quercus | Webster's Dictionary of the English Language

quercus
quercus, ūs (gen. querci, Pall. 4, 7, 8; gen. plur. quercorum, Cic. Fragm. ap. Prisc. p. 717 P.; dat...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
quercus
quercus ūs, f 1 CAR-, an oak, oak-tree, Italian oak : magna Iovis, V.: glandifera: quercus et ilex...

An Elementary Latin Dictionary