A fish of the family Mullidae (order Syngnathiformes), especially the genus Mullus (the red mullets or goatfish).

(especially US) A fish of the family Mugilidae (order Mugiliformes) (the grey mullets).

(US) Any of several species of freshwater fish in the sucker family (especially in the genus Moxostoma, the redhorses)

A fool.

A hairstyle where the hair is kept short on the top and sides and long at the back.

(slang) A person who mindlessly follows a fad, a trend, or a leader.

(heraldry) A star with straight edges and usually with five or six points.

The rowel of a spur.