Ruck (zn):
ruk(en) sudden movement.
(en) quick, often unpleasant tug or shake.
(en) physics: rate of change in acceleration.
(en) violent twisting movement.
(fi) fysiikka., botsen(en) an act of jolting., hobbelen(en) sudden or unsteady movement., horten(en) an act of jolting., schokken(en) an act of jolting., slingeren(en) sudden or unsteady movement.
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