Found 2 items, similar to topmast.
English → English (WordNet) Definition: topmast topmast n : the mast next above a lower mast and topmost in a fore-and-aft rig
English → English (gcide) Definition: Topmast Topmast \Top"mast\, n. (Naut.) The second mast, or that which is next above the lower mast, and below the topgallant mast. [1913 Webster]