Pronunciation: (mān'mast", -mäst"; Naut.mān'must),[key] —n.Naut. 1. the second mast from forward in any ship having two or more masts, except for a yawl, ketch, or dandy. See illus. under quarterdeck. 2. the larger forward mast of a yawl, ketch, or dandy.
3. the sole mast of any of various ships, as sloops or cutters.