Dictionary

To step or climb onto or otherwise enter a ship, aircraft, train or other conveyance.

Example: It is time to board the aircraft.

To provide someone with meals and lodging, usually in exchange for money.

Example: to board one's horse at a livery stable

To receive meals and lodging in exchange for money.

To capture an enemy ship by going alongside and grappling her, then invading her with a boarding party

(of a structure, such as a roof, window, etc.) wooden, built with pieces of wood