English

Alternative forms

• roundtop
• round top

Noun

round-top ‎(plural round-tops)

1. (nautical) A platform at the top of a ship's mast.
   • 1722, Daniel de Foe, Colonel Jack (Chapter 11)

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

References

• J[ohn] A. Simpson and E[dward] S. C. Weiner, editors (1989) The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, ISBN 978-0-19-861186-8.