Entry 3 senses · 2 variants Webster, 1913 Philter · Phil·ter · IPA /ˈfɪltɚ/ n. v. t. 01 n. A potion or charm intended to excite the passion of love. 1. A potion or charm intended to excite the passion of love. 02 v. t. To impregnate or mix with a love potion; as, to philter a draught. imp. & p. p. Philtered; p. pr. & vb. n. Philtering 1. To impregnate or mix with a love potion; as, to philter a draught. 2. To charm to love; to excite to love or sexual desire by a potion.