Definition of trash talker in English:

trash talker

noun

US
informal
  • See trash talk

    • ‘On one hand, he is a self-confessed jaw flapper who ranks eighth on our list of favorite trash talkers.’
    • ‘I had always been a trash talker about how I could beat someone up if they challenged me but now that the challenge was here I don't know if I am really willing to go through with it.’
    • ‘I was never a big trash talker in college, but if somebody was a bit cocky, I let them know it.’
    • ‘I'm really not much of a trash talker.’
    • ‘He isn't popular among opponents - he's a trash talker who will do anything to gain a competitive edge - but he definitely is one of the two or three best players on the team.’