Definition of practical joker in US English:

practical joker

noun

  • See practical joke

    • ‘‘He is a laugh a minute and we are both practical jokers so we got on immediately,’ she said.’
    • ‘Lizzie, on the other hand, born after two practical jokers, was a practical joker herself.’
    • ‘He was a really friendly guy, a real practical joker.’
    • ‘Knowing him to be a practical joker who often pretended to be asleep and then spring on her, she braced herself for the ‘surprise.’’
    • ‘Either that, or we have more than our fair share of practical jokers.’