v. & n.
v.intr. 1 shake, tremble. 2 rock to and fro. 3 (of a person) shake or shudder (was quaking with fear).
n. 1 colloq. an earthquake. 2 an act of quaking. quaking-grass any grass of the genus Briza, having slender stalks and trembling in the wind: also called dodder-grass. quaky adj. (quakier, quakiest).
[ OE cwacian ]