Jerk

jėrk, v.t. to throw with a quick effort: to give a sudden movement.— n. a short, sudden movement: a striking against with a sudden motion: an involuntary spasmodic contraction of a muscle.— ns. Jerk′er ; Jerk′ine .— adj. Jerk′y , moving or coming by jerks or starts, spasmodic; capricious, impatient. [A variant of jert and gird , and conn. with yard , a rod.]