φυλακτήριον

τό
A. guarded post, fort, castle, Hdt. 5.52: esp. an outpost communicating with fortifications, Th. 4.31,33,110, X. Cyr. 7.5.12: pl., guardrooms, Arist. Pol. 1331a20.
2. safeguard, security, Pl. Lg. 917b: preservative, D. 6.24; amulet, Dsc. 5.154, Plu. 2.378b, etc.; among the Jews φυλακτήρια were small rolls of parchment with texts from the Law written on them, bound to the forehead by persons praying, Ev.Matt. 23.5; φ. χρυσᾶ, symbols denoting the kingdoms of Upper and Lower Egypt, OGI 90.45 (Rosetta, ii B. C.); amulet, PMag.Lond. 121.298 (pl.); metaph., τὸ ὄνομά σου ἔχω ἓν φ. ἐν καρδίᾳ PMag.Leid.W. 18.2.
3. perh. guard or chain, PLond.ined. 2199.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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