The Collaborative International Dictionary of English v.0.48:
Laugh \Laugh\, v. t.
1. To affect or influence by means of laughter or ridicule.
Will you laugh me asleep, for I am very heavy?
I shall laugh myself to death. --Shak.
2. To express by, or utter with, laughter; -- with out.
From his deep chest laughs out a loud applause.
To laugh away.
(a) To drive away by laughter; as, to laugh away regret.
(b) To waste in hilarity. "Pompey doth this day laugh away
his fortune." --Shak.
To laugh down.
(a) To cause to cease or desist by laughter; as, to laugh
down a speaker.
(b) To cause to be given up on account of ridicule; as, to
laugh down a reform.
To laugh one out of, to cause one by laughter or ridicule
to abandon or give up; as, to laugh one out of a plan or
To laugh to scorn, to deride; to treat with mockery,
contempt, and scorn; to despise.