To wail is defined as to cry to express intense sadness.(verb)
An example of to wail is to sob loudly at a funeral.
Wail is slang for to play very well on an instrument.(verb)
An example of to wail is to play an amazing piano solo in a jazz performance.
The definition of a wail is a long cry.(noun)
An example of a wail is a cry by a very upset baby.
See wail in Webster's New World College Dictionary
Origin: ME wailen < ON væla, to lament < væ, woe
See wail in American Heritage Dictionary 4
verb wailed, wail·ing, wails verb, intransitive
Origin: Middle English wailen
Origin: , probably of Scandinavian origin
Origin: ; akin to Old Norse vāla, vǣla.
Learn more about wail