chuff

verb

(intransitive) To make noisy puffing sounds, as of a steam locomotive. / (Britain, slang) To break wind.

The old steam engine chuffed along the tracks.

意味（1）

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

The horses stumbled along, coughing and chuffing.

意味（2）

(Britain, slang) To break wind.

意味（3）

Of a powder, propellant, or explosive charge: to become extinguished and reignited intermittently.