Yes, jerk is a Scrabble word!

Verb

1. Pull, or move with a sudden movement

2. Move with abrupt, seemingly uncontrolled motions

3. Make an uncontrolled, short, jerky motion

4. Jump vertically, with legs stiff and back arched

5. Throw or toss with a quick motion

Noun

1. A dull stupid fatuous person

2. An abrupt spasmodic movement

3. (mechanics) the rate of change of acceleration

4. Meat (especially beef) cut in strips and dried in the sun

5. Raising a weight from shoulder height to above the head by straightening the arms

6. A sudden abrupt pull