a game in which one player or side must pocket all of either the solid-color balls or the striped ones before being permitted to attempt the pocketing of the eightball, which wins.
2.
Slang. an inept person.
—Idiom
3.
behind the eightball, Informal. in a difficult, disadvantageous, or uncomfortable situation: He hasn't studied all term, and now he's behind the eightball.
[eyt-bawl] 
