Entry 3 senses · 2 variants Webster, 1913 Seg · IPA /sɛɡ/ n. n. 01 n. Sedge. 1. Sedge.(Bot.) [Obs.] 2. The gladen, and other species of Iris. 02 n. A castrated bull. 1. A castrated bull.[Prov. Eng. & Scot.]