Definition of "costar" [costar]

• A starring actor or actress given equal status with another or others in a play or film. (noun)
• To act or present as a costar. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Mi idea es que los tamales se preparan por muchas razones, entre ellas: 1) rinden bastante; 2) ya que estén preparados, los que lleguen pueden comer a gusto sin costar más trabajo a los familiares y se pueden dedicar a los rezos."
• "If the 3 Series is the star of the commercial, then the costar is the Gravity Slider -- the revolutionary camera rig created especially for the BMW shoot."
• ""Spartacus" is a flashy, big-budget attempt to forge a brand, complete with a big-name costar (Lucy Lawless, erstwhile heroine of the syndicated "Xena: Warrior Princess") and the heavily stylized, comic-book-like use of green-screen technology familiar from movies like "300" and "Sin City.""