depressor

/D IH0 P R EH1 S ER0/
noun
  1. 1

    Anything that depresses

  2. 2

    An instrument used to push something out of the way during an examination

  3. 3

    Any of several muscles that pull down

  4. 4

    Anything that lowers blood pressure

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