Entry 2 senses Webster, 1913 Corm /(kôrm)/ · IPA /kˈɔrm/ 01 n. A solid bulb-shaped root, as of the crocus. See Bulb. 1. A solid bulb-shaped root, as of the crocus. See Bulb.(Bot.) See: Bulb 2. Same as Cormus, 2.(Biol.) See: Cormus