any clever maneuver; "he would stoop to any device to win a point"; "it was a great sales gimmick"; "a cheap promotions gimmick for greedy businessmen"
to move in a twisting or contorted motion, (especially when struggling); "The prisoner writhed in discomfort"; "The child tried to wriggle free from his aunt's embrace"
twist or pull violently or suddenly, especially so as to remove (something) from that to which it is attached or from where it originates; "wrench a window off its hinges"; "wrench oneself free from somebody's grip"; "a deep sigh was wrenched from his chest"
twist suddenly so as to sprain; "wrench one's ankle"; "The wrestler twisted his shoulder"; "the hikers sprained their ankles when they fell"; "I turned my ankle and couldn't walk for several days"