Entry 2 senses · 2 variants Webster, 1913 Masticatory · Mas·ti·ca·to·ry · IPA /mæˈstɪk.əˌtɔr.i/ a. n. 01 a. Chewing; adapted to perform the office of chewing food. 1. Chewing; adapted to perform the office of chewing food. 02 n. A substance to be chewed to increase the saliva. pl. -ries 1. A substance to be chewed to increase the saliva.(Med.)