phylactery
Either of two small leather cases containing scrolls with passages from the Torah, traditionally worn by a Jewish man (one on the arm (usually the left) and one on the forehead) and now sometimes by a woman at certain morning prayers as a reminder to obey the law as set out in the Bible; a tefilla.
All there [the scribes and Pharisees'] workꝭ [workis] they do⸝ for to be ſene of men. They ſett abroade there philateris⸝ and make large borders on there garmenttꝭ [garmenttis]⸝ […]
A fringe which an Israelite was required to wear as a reminder to obey the law as set out in the Bible; (by extension) any fringe or border.
archaic
This Fabrick vvas ſo ſtupendous, as that vvhen King Cambyſes [II] had ſack'd and raz'd Syene, and the Flames had rambled to the Borders and the Phylacteries (as it vvere) of this Obelisk, he commanded the Fire to be extinguiſh'd, being ſtruck vvith Admiration of ſo venerable a Pile.
A scroll with words on it depicted as emerging from a person's mouth or held in their hands, indicating what they are singing or speaking; a banderole, a speech scroll.
historical
[T]o bear on their faces, as plainly as on a phylactery, the inscription, "Do, pray, look at the coronet on my panels;" […]
A scroll with words on it depicted as emerging from a person's mouth or held in their hands, indicating what they are singing or speaking; a banderole, a speech scroll. — A list or record.
figuratively, historical
Here is the phylactery of his [John of Lancaster, Duke of Bedford's] vices—wily, wary, cold, calculating, indirect, faithless. In act, treacherous and cruel.
Where it comes from
From Late Middle English philacterie, philaterie, filaterie (“amulet; tefilla; balderdash, idle words”), from Late Latin phylacterium (“amulet; reliquary; tefilla”), from Koine Greek φῠλᾰκτήρῐον (phŭlăktḗrĭon, “amulet; tefilla”) (used in the New Testament to translate Hebrew תפילין (“tefillin”)), from Ancient Greek φῠλᾰκτήρῐον (phŭlăktḗrĭon, “fortified outpost, watchman’s post; protection, safeguard”), from φυλακτήρ (phulaktḗr, “guard, watcher”) + -ῐον (-ĭon, suffix forming nouns). Φυλακτήρ (Phulaktḗr) is derived from φυλακ- (phulak-) (the stem of φῠλᾰ́σσω (phŭlắssō, “to guard, watch; to defend, protect”)) + -τήρ (-tḗr, suffix forming masculine agent nouns); and φῠλᾰ́σσω (phŭlắssō) from φῠ́λᾰξ (phŭ́lăx, “guard, sentry”), probably Pre-Greek.
Adapted from the Wiktionary entry phylactery (CC BY-SA 4.0).