βαλλήν

A. king, A. Pers. 657, S. Fr. 515. —Prob. Phrygian word acc. to Hsch., but Thurian acc. to Hermesianax Hist. ap. Ps.-Plu. Fluv. 12.4: βαλληναῖον ὄρος, = βασιλικόν (in Phrygia) and βαλλήν, a fabulous precious stone, Ps.-Plu. Fluv. 12.3,4.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project