arresters

/ER0 EH1 S T ER0 Z/
noun
  1. 1

    One who places another under arrest.

  2. 2

    A device that stops or prevents, such as a railway buffer, or a spark arrester that prevents sparks from being released to start fires.

Source: https://en.wiktionary.org/wiki/arrester, https://en.wiktionary.org/wiki/arresters