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.

Rhīpaei or Rhīphaei (Rīp-), montes, a range of mountains in the most northern part of Scythia, where are the sources of the Tanais, Mel. 1, 19, 13; 2, 1, 1; 3, 5, 1; Plin. 4, 12, 24, § 78; 6, 5, 5, § 15; Enn. Ann. 4, 5 al.
Less freq. in sing.: Rhipaeus mons, Mel. 1, 19, 18 and 20.
Hence Rhī-paeus or Rhīphaeus (Rīp-), a, um, adj., Rhiphæan: arces, Verg. G. 1, 240: Eurus, id. ib. 3, 382: pruinae, id. ib. 4, 518: grando, Stat. Th. 1, 420: nives, Luc. 4, 118: bruma, Val. Fl. 5, 603; Col. 10, 77: mons, Mel. 1, 19, 13; 2, 1, 1.