Lewis Short
cŏlŭmellāris, e
* Adj [columella], pillar-formed (rare): dentes,the grinders of horses,Varr. R. R. 2, 7, 2; Plin. 11, 37, 64, § 168; in vulg. Lat. colomelli, acc. to Isid. Orig. 11, 1, 48.
Charlton T. Lewis, Charles Short, A Latin Dictionary