round-top

• roundtop
• round top

round-top (plural round-tops)

1. (nautical) A platform at the top of a ship's mast.
   • 1722, Daniel Defoe, chapter 11, in Colonel Jack:

     A man on the roundtop cried out, Au voile, a sail.

• John A. Simpson and Edmund S. C. Weiner, editors (1989), “round-top”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN.

• top round