Entry 3 senses · 2 variants Webster, 1913 Bailer /bāl'-ẽr/ · Bail·er · IPA /bˈeɪlər/ n. n. 01 n. See Bailor. 1. See Bailor.(Law) See: Bailor 02 n. One who bails or lades. 1. One who bails or lades. 2. A utensil, as a bucket or cup, used in bailing; a machine for bailing water out of a pit.