What is the meaning of pout?

noun

• A disdainful grimace.
  • synonyms: moue, wry face
• Marine eellike mostly bottom-dwelling fishes of northern seas.
  • synonyms: eelpout
• Catfish common in eastern United States.
  • synonyms: horned pout, hornpout, Ameiurus Melas

verb

• Be in a huff and display one's displeasure.
  • usage: "She is pouting because she didn't get what she wanted"
  • synonyms: sulk, brood
• Make a sad face and thrust out one's lower lip.
  • usage: "mop and mow"; "The girl pouted"
  • synonyms: mop, mow