chuffing

/CH AH1 F IH0 NG/
verb
  1. 1

    To make noisy puffing sounds, as of a steam locomotive.

  2. 2

    To break wind.

  3. 3

    To intermittently extinguish and reignite a powder charge.

noun
  1. 1

    A noisy puffing sound, as of a steam locomotive.

adjective
  1. 1

    Used as a mild intensifier, especially as a substitute for "fucking".

Source: https://en.wiktionary.org/wiki/chuff, https://en.wiktionary.org/wiki/chuffing