one of William Shakespeare 's best-known plays, a sad romantic story about two young people, Romeo and Juliet, who fall in love although their families are great enemies. They marry secretly, but are prevented from being together, and finally they both kill themselves. Many phrases from the play are well known, especially "Romeo, Romeo, wherefore art thou Romeo?", which Juliet says while she is standing on a balcony and Romeo is below her in the garden