Definition of mainmast
: a sailing ship's principal mast
Recent Examples of mainmast from the Web
The location of the Titanic is no longer a secret, and Ballard said submarines have bumped into it and landed on it, destroying its mainmast and damaging large areas of the deck.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mainmast'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of mainmast
MAINMAST Defined for Kids
Definition of mainmast for Students
: the principal mast of a sailing ship
Seen and Heard
What made you want to look up mainmast? Please tell us where you read or heard it (including the quote, if possible).