brickbat

/B R IH1 K B AE0 T/
noun
  1. 1

    A piece of brick used as a weapon, especially if thrown, or placed in something like a sock and used as a club.

  2. 2

    A criticism or uncomplimentary remark.

verb
  1. 1

    To attack by throwing brickbats.

  2. 2

    To assail with criticism.

Source: https://en.wiktionary.org/wiki/brickbat