Ruck (zn):
ruk(en) sudden movement.
(en) violent twisting movement.
(en) physics: rate of change in acceleration.
(en) quick, often unpleasant tug or shake.
(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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