inhaling

/IH0 N HH EY1 L IH0 NG/
verb
  1. 1

    To draw air into the lungs, through the nose or mouth by action of the diaphragm.

  2. 2

    To draw air or any form of gas (either in a pure form, or mixed with small particles in form of aerosols/smoke -sometimes stemming from a medicament) into the lungs, through the nose or mouth by action of the diaphragm.

  3. 3

    To eat very quickly.

noun
  1. 1

    Inhalation

Source: https://en.wiktionary.org/wiki/inhale, https://en.wiktionary.org/wiki/inhaling