A Hawk
1 A diurnal predatory bird of the family Accipitridae, smaller than an eagle.<p>2 Any diurnal predatory terrestrial bird of similar size and appearance to the accipitrid hawks, such as a falcon</p><p>3 (politics) An advocate of aggressive political positions and actions. </p><p>Synonyms: warmonger, war hawk</p><p>Antonym: dove</p><p>(game theory) An uncooperative or purely-selfish participant in an exchange or game, especially when untrusting, acquisitive or treacherous. Refers specifically to the Prisoner's Dilemma, alias the Hawk-Dove game.</p><p>Antonym: dove</p>