n pl , -teries
1 (Judaism) usually pl (Also called)
Tefillah either of the pair of blackened square cases containing parchments inscribed with biblical passages, bound by leather thongs to the head and left arm, and worn by Jewish men during weekday morning prayers
2 a reminder or aid to remembering
3 Archaic an amulet or charm
(C14: from Late Latin phylacterium, from Greek phulakterion outpost, from phulax a guard)
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