1. co-star - Noun
2. co-star - Verb
one of two actors who are given equal status as stars in a play or film
be the co-star in a performance
feature as the co-star in a performance
Source: WordNetWhenever I'm asked who my favourite co-star is, I always hesitate in giving an answer. Roger Moore
When I'm on a picture, I have two bosses - the director and the producer. My co-star is not my boss. Jim Brown
Sure, I've done movies in which I was embarrassed by my performance, or might not have cared for a co-star. Then I'd have to tell lies, like, 'Oh, we love each other; everything was perfect!' Sandra Bullock
Every film teaches you something; every experience on every film set with every co-star teaches you something. You learn something new. I think the challenge is to keep working harder and doing better. Deepika Padukone
Um, accidents happen. Especially if there's a co-star that you're not that fond of - you might 'accidentally' deck him. But no, I'm a professional. I'm just saying that can happen. Timothy Olyphant
Aamir Khan, co-star Ghulam:. Rani Mukerji