On or in a means of transportation. / (idiomatic) Joining in or participating. / (idiomatic) Agreeing or supporting. / (idiomatic) Into itself or oneself.

On a vehicle or vessel; aboard. / Agreeing or supporting; having been taken on board.

present participle of board

the act of people getting aboard a ship aircraft, train, bus etc.; embarkation / the act of a sailor or boarding party attacking an enemy ship by boarding it / a structure made of boards

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

simple past tense and past participle of board

plural of boarding

A sandwich board.

A surname.

plural of boardful