|1.||[ noun ] (geology) shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity|
|Synonyms:||earthquake seism temblor|
|Related terms:||geological_phenomenon shock seaquake tremor tremor|
|2.||[ verb ] shake with fast, tremulous movements|
"His nostrils palpitated"
|Related terms:||tremble shaking|
|3.||[ verb ] shake with seismic vibrations, as of planets|
"The earth was quaking"
|Related terms:||shake earthquake|