Brick

Full explanation

A brick is a flop, turn, or river card that fails to improve any player’s hand.

Explanation. Called a “brick” because it acts like a wall that stops draws or makes no change in board texture. These cards are often blanks—like a 2 on a board of K‑J‑8 where no one improves. Brick prevents further action momentum and informs betting strategy—you may choose to check down rather than continue bluffing.