σιμάριον

τό
A. σῖμος 11, a Nile fish, POxy. 1857.1 (vi/vii A.D.): but Dim. σιμαρίδιον, τό, appears to be part of a horse's trappings, ib.1289.9 (v A.D.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project