Also found in: Dictionary, Thesaurus, Wikipedia.
Related to mizzenmast: masted, foremast
mizzenmast, mizenmast Nautical
1. (on a yawl, ketch, or dandy) the after mast
2. (on a vessel with three or more masts) the third mast from the bow
The third mast or the mast aft of the mainmast in a sailing ship.