N. the part of your face which you put food into, or which you use for speaking

  • A close mouth catches no flies.病从口入。
  • penis in mouth, gun in mouth, fingers in mouth
  • You and your big mouth!你这张快嘴!
  • blow job

leave a bad taste in mouth

  • To give one a negative impression(based on something that has already happened).
  • I don’t know, man, the fact that he lied to you just leaves a bad taste in my mouth.
  • The way they conducted the interview left a bad taste in my mouth. I don’t think I’d accept the job even if they offered it.