philacterium Save Georges DMLBS Gaffiot 2016 Du Cange philactērium, s. phylactērium. philacterium v. 1 filatorium, phylacterium phĭlactērĭum, v. phylacterium. PHILACTERIUM. Phylacterium : Tabula, in cujus medio insertum est philacterium plenum reliquiis, sub quo continetur parva porcio ligni Domini. (Inventar. Sacrist. Clarevallis, an. 1405.)