o‧ver‧board /ˈəʊvəbɔːd $ ˈoʊvərbɔːrd/ 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

[TahlilGaran] Dictionary of Contemporary English ▲

overboard
ˈəuvəbɔ:d
See: go off the deep end or go overboard

[TahlilGaran] English Idioms Dictionary ▲