Entry 1 sense Webster, 1913 Sabella /səb-ĕl'-ə/ · Sa·bel·la · IPA /səbˈɛlə/ 01 n. A genus of tubicolous annelids having a circle of plumose gills around the head. 1. A genus of tubicolous annelids having a circle of plumose gills around the head.(Zool.)