(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.
(intransitive) To make an attack while on the wing; to soar and strike like a hawk.
Noun
A plasterer's tool, made of a flat surface with a handle below, used to hold an amount of plaster prior to application to the wall or ceiling being worked on: a mortarboard.
Verb
(transitive) To sell; to offer for sale by outcry in the street; to carry (merchandise) about from place to place for sale; to peddle.
Noun
An effort to force up phlegm from the throat, accompanied with noise.
Verb
(transitive, intransitive) To cough up something from one's throat.
(transitive, intransitive) To try to cough up something from one's throat; to clear the throat loudly.