φυλακτήριον phylaktḗrion

Meaning

a guard-case, i.e. "phylactery" for wearing slips of Scripture texts

In the King James Version: phylactery

Derivation: neuter of a derivative of G5442 (φυλάσσω);

Where it is used

• Matthew 23:5 All their deeds are done for men to see. They broaden their phylacteries and lengthen their tassels.