Meaning of costar
Pronunciation: (n.kō'stär"v.kō'stär'), [key]
— n., v., -starred, -star•ring.
- a performer, esp. an actor or actress, who shares star billing with another.
- a performer whose status is slightly below that of a star.
- to share star billing with another performer.
- to receive billing of slightly less status than that of a star.
- to present (two or more actors) as having equal billing or prominence.
- to present as having slightly less status than that of a star.