LSJ
τό, post, watch-tower, fort, Plb. 10.30.6; pl., = Lat. stationes, Id. 5.75.10, 76.3; φυλάκιον, Aen.Tact. 20.5 cod. M, App. Ill. 26, PRyl. 288 (pl., iii AD).
a watch, party consisting of four soldiers, Plb. 6.33.7; pl., in form φυλάκια, Id. Fr. 87 (ap. Suid.).
in Alex. Greek, a menstruous cloth, Dam. Isid. 52.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)