D defs.my
Entry 1 sense Webster, 1913

Cingulum

· Cin·gu·lum · IPA /ˈsɪŋɡjələm/
01 n. A distinct girdle or band of color; a raised spiral line as seen on certain univalve shells.
  1. 1.
    A distinct girdle or band of color; a raised spiral line as seen on certain univalve shells.(Zool.)