Entry 2 senses · 2 variants Webster, 1913 Feller /fĕl'-ẽr/ · Fell·er · IPA /fˈɛlər/ n. n. 01 n. One who, or that which, fells, knocks or cuts down; a machine for felling trees. 1. One who, or that which, fells, knocks or cuts down; a machine for felling trees. 02 n. An appliance to a sewing machine for felling a seam. 1. An appliance to a sewing machine for felling a seam.