Answer: maintop

AnswerCrossword Clue
MAINTOPNautical platform
MAINTOPCircus tent.
MAINTOPPlatform at the head of a certain mast.
MAINTOPPlatform at the head of a mast.
MAINTOPPlatform on a ship
MAINTOPPlatform on a square-rigged vessel
MAINTOPHigh platform on some sailing ships
maintopa platform at the head of a mainmast
maintopplatform at the head of the lower mainmast