"Bruit de soufflet" is a French term that translates to "bellows noise" in English. The phrase refers to the sound produced by a bellows, a flexible bag used to blow air into a fire or musical instrument. When seeking synonyms for "bruit de soufflet", several alternatives come to mind. For example, "blowing sound" captures the essence of the original expression. Additionally, "breath-like noise" can substitute for "bruit de soufflet". Furthermore, "huffing sound" or "exhalation noise" can also convey a similar meaning. These synonyms effectively express the concept of the audible rush of air associated with the bellows' action.