Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

balnĕārĭus (bălĭneārĭus, Inscr. Grut. 171, 8), a, um, adj. [balneum], of or pertaining to a bath (class. for the preced.): fur, lurking about baths, Cat. 33, 1; cf. the title in Dig. 47, 17: de furibus balneariis: furtum, Dig. 1. 1. § 3: instrumentum, a bathing implement, ib. 33, 7, 17: vapores, ib. 43, 21, 3, § 6.
Subst.: balnĕārĭa, ōrum, n. plur., a place for bathing, a bathing-room, bath: nihil ei restabat praeter balnearia et ambulationem et aviarium, Cic. Q. Fr. 3, 1, 1, § 1; so id. Att. 13, 29, 2; Col. 1, 6, 2; Sen. Q. N. 4, 9; id. Tranq. 9, 7.