'goop' definitions:

Definition of 'goop'

From: WordNet
noun
Any thick, viscous matter [syn: sludge, slime, goo, goop, gook, guck, gunk, muck, ooze]
noun
Street names for gamma hydroxybutyrate [syn: soap, scoop, max, liquid ecstasy, grievous bodily harm, goop, Georgia home boy, easy lay]