φυλακεῖον
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
τό,
A 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 A. D.). 2 a watch, party consisting of four soldiers, Plb.6.33.7: pl., in form φυλάκια, Id.Fr. 87 (ap.Suid.). II in Alex. Greek, a menstruous cloth, Dam. Isid.52.