Originally: a fish of, or resembling one of, the family Labridae; = labrid . In later use specifically: a fish of the perciform suborder Labroidei or superfamily Labroidea, which comprises the wrasses, cichlids, parrotfishes, damselfishes, and related forms.
Originally: of or resembling fishes of the family Labridae; = labrid . In later use specifically: relating to or designating fishes of the suborder Labroidei or superfamily Labroidea.
Early 19th century. From scientific Latin Labrus, genus name + -oid.