quercĕus — Lewis & Short
quercĕus, a, um, adj.id.,
I of oak, oaken, oak- (post-Aug.):
querceae coronae,garlands of oak-leaves, Tac. A. 2, 83; Aur. Vict. Epit. 3 fin.; Serv. ad Verg. A. 6, 772.