'To laugh away' definitions:

Definition of 'To laugh away'

From: GCIDE

Laugh \Laugh\, v. t.
1. To affect or influence by means of laughter or ridicule. [1913 Webster]
Will you laugh me asleep, for I am very heavy? --Shak. [1913 Webster]
I shall laugh myself to death. --Shak. [1913 Webster]
2. To express by, or utter with, laughter; -- with out. [1913 Webster]
From his deep chest laughs out a loud applause. --Shak. [1913 Webster]
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 purpose.
To laugh to scorn, to deride; to treat with mockery, contempt, and scorn; to despise. [1913 Webster]