It is the name of a fictional character, mercenary and Marvel Comics antihero. The literal translation of this word may have several meanings such as: puddle, pond, pool or pool dead or no life (or unused). Consortium, community, panel, Fund or reserve depleted or inactive. Group or play dead or finished. Apparently none of these meanings have nothing to do with the character's name, unless Deadpool refers to the game of death which is bloody actor plays in the magazines and film.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
