σίγνον

τό
A. signum, statue, IG 14.971 (Rome, iii A.D.).
II. pl., the place where the standards were set up in a camp, used as a store, prison, etc., PLond. 2.413.12 (iv A.D.), PLond.ined. 2487.18 (iv A.D.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project