Definitions of pout:

• noun:   a disdainful pouting grimace
• noun:   marine eellike mostly bottom-dwelling fishes of northern seas
• noun:   catfish common in eastern United States
• verb:   make a sad face and thrust out one's lower lip

  Example: "The girl pouted"

• verb:   be in a huff and display one's displeasure

  Example: "She is pouting because she didn't get what she wanted"