Definitions from Wiktionary ( )

▸ noun:  A sudden, often uncontrolled movement, especially of the body.
▸ noun:  A quick tug or shake.
▸ noun:  (originally Canada, US, slang, derogatory) A person with unlikable or obnoxious qualities and behavior, typically mean, self-centered, or disagreeable; an arsehole.
▸ noun:  (US, slang, derogatory) A stupid person; an idiot or fool.
▸ noun:  (weightlifting) A lift in which the weight is taken with a quick motion from shoulder height to a position above the head with arms fully extended and held there for a brief time.
▸ noun:  (slang) An act of male masturbation.
▸ noun:  (preceded by definite article) A dance, popular in Western culture in the 1960s, in which the head and upper body is thrown forwards regularly to the beat of the music.
▸ noun:  (physics, engineering) The rate of change in acceleration with respect to time.
▸ noun:  (US, obsolete) A soda jerk.
▸ verb:  (intransitive) To make a sudden uncontrolled movement.
▸ verb:  (transitive) To give a quick, often unpleasant tug or shake.
▸ verb:  (US, slang, vulgar) To masturbate.
▸ verb:  (obsolete) To beat, to hit.
▸ verb:  (obsolete) To throw with a quick and suddenly arrested motion of the hand.
▸ verb:  (usually transitive, weightlifting) To lift using a jerk.
▸ verb:  (obsolete) To flout with contempt.
▸ noun:  (Caribbean, Jamaica) A rich, spicy Jamaican marinade.
▸ noun:  (Caribbean, Jamaica) Meat (or sometimes vegetables) cured by jerking, in which it is coated in spices and slow-cooked over a fire or grill traditionally composed of green pimento wood positioned over burning coals; charqui.
▸ verb:  To cure (meat) by cutting it into strips and drying it, originally in the sun.

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