0 past simple and past participle of board
1 to get onto or allow people to get onto a boat, train, or aircraft:
The platform was crammed with people trying to board the train.
I took out a travel insurance policy before I boarded the plane.
Flight 474 to Buenos Aires is now boarding at gate 9.
Poverty was the main reason why children were boarded out, frequently associated with loss of parents and difficulties in providing for a large household.
The three oldest children were boarded out while the two youngest were allowed to stay with their parents who would receive poor relief.
Those few students who came from outside the city ordinarily boarded in the home of one or another of the college's faculty members.