n.(电话)送话口；(乐器)吹口；喉舌
He put his hand over the mouthpiece and called his wife to the phone. 他用手捂住话筒，叫妻子来接电话。
They would breathe it as a powder into their lungs, through a mouthpiece device. 他们可以通过一种吹口装置将胰岛素粉末吸入肺部。
