blocker

block +‎ -er

• Rhymes: -ɒkə(r)

blocker (plural blockers)

1. Agent noun of block; something that blocks something else.
   1. (card games) A playing card, needed by one player, that is held by another.
   2. (poker) A blocker bet.
   3. A close-fitting rectangular glove worn by a goalie in multiple forms of hockey.
   4. (sports) One who blocks or impedes the movement of an opponent.
   5. (computing) One who prevents another user from contacting them.
      • 2013, Elizabeth Laugeson, The Science of Making Friends

        Likewise, any connections shared between your child (the blocker) and the user being blocked will also be broken.

• brockle, reblock