o ‧ ver ‧ board /ˈəʊvəbɔːd $ ˈoʊvərbɔːrd/ BrE AmE adverb
1 . over the side of a ship or boat into the water:
One of the crew fell overboard and drowned.
Man overboard (=said when someone falls off a boat) !
2 . go overboard to do or say something that is too extreme for a particular situation:
I hope politicians will not go overboard in trying to control the press.
3 . throw something overboard to get rid of an idea, system etc that is considered to be useless or unnecessary