Mainmast (noun)

The tallest mast on a ship, located at or near the front of the ship.

Origin:

Late 16th century: from main + mast.

Examples:

1. The mainmast was towering over the other masts of the ship.
2. The sailor was sent to the top of the mainmast to fix the sails.
3. The pirate ship had a sturdy mainmast that could withstand rough seas.
4. The sailors had to be careful when climbing the mainmast during storms.
5. The mainmast was a key part of the ship, used to support the sails.