φυλακτήριον, -ου, τό 1. an outpost, fortification (Thuc., al.). 2. a safeguard (Plat.). 3. an amulet (Plut., al.); in NT for the Talmudic תְּפִלִּין, a prayer fillet, a phylactery, a small strip of parchment on which portions of the law were written and worn on the forehead and next the heart (cf. Exo.13:16): Mat.23:5.† (AS)
STRONG'S WORD STUDY
G5440 — φυλακτήριον
phulaktērion · phylactery · Greek