Laugh
Created | Updated Sep 21, 2005
bring to particular state by laughing: to cause somebody or yourself to be in a particular state by laughing long and hard.
Thesaurus says it pretty much. Also laugh usually starts with a smile(See "smile"). And just to make things perfectly clear with the definition of laugh, we may say that it is what people around do when the car driving by throws a considerable amount of water(usually cold) from the near-by puddle on you or when you get a stupid haircut(See “haircut”).