icepack

/AY1 S P AE0 K/
noun
  1. 1

    A large floating mass of ice; pack ice.

  2. 2

    A pack of crushed ice applied to the body in order to reduce pain or inflammation.

  3. 3

    A plastic sac of silicone that can be cooled in a freezer and then used in a cool bag, cool box or cooler; a freezer block

Source: https://en.wiktionary.org/wiki/ice%20pack, https://en.wiktionary.org/wiki/icepack