Entry 2 senses Webster, 1913 Grains /(grānz)/ · IPA /ɡɹeɪnz/ 01 n. pl. See 5th Grain, n., 2 (b). 1. See 5th Grain, n., 2 (b). See: Grain 2. Pigeon's dung used in tanning. See Grainer, n., 1. See: Grainer