The Collaborative International Dictionary
Overboard \O"ver*board`\, adv. Over the side of a ship; hence, from on board of a ship, into the water; as, to fall overboard.
To throw overboard, to discard; to abandon, as a dependent or friend.
To go overboard, to go to an extreme; to overdo; as, he went overboard at the buffet and got an upset stomach.
Usage examples of "to go overboard".
I had planned to go overboard in the night, quiet-like, but when I saw ye trapped by the rail I just upped on the mainsheet and swung over like a capuchin on a vine.
Though Max had shown that he was a careful boatman and a fine swimmer, what would happen if he had to go overboard and swim for shore?
Or go on deck and use the heads which are for-rard, but not in heavy seas, sir, for you're likely to go overboard and no one will be any the wiser.
Biagio held fast to the edge of the boat, careful not to go overboard, then settled back as the men took up the oars and started rowing.
The Tsla are nice enough, and they _seem_ content within themselves, but that's hardly reason enough to go overboard about them.
And tell your chaps to watch like lynxes for anything to go overboard.