Noun

• S: (n) dogfight (a fiercely disputed contest) "their rancor dated from a political dogfight between them"; "a real dogfight for third place"; "a prolonged dogfight over their rival bids for the contract"
• S: (n) hassle, scuffle, tussle, dogfight, rough-and-tumble (disorderly fighting)
• S: (n) dogfight (an aerial engagement between fighter planes)
• S: (n) dogfight (a violent fight between dogs (sometimes organized illegally for entertainment and gambling))

Verb

• S: (v) dogfight (arrange for an illegal dogfight)
• S: (v) dogfight (engage in an aerial battle with another fighter plane)