1. (

• earthquake ,
• quake ,
• temblor ,
• seism

) shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity ;

1. (

• quiver ,
• quake ,
• palpitate ,

) shake with fast, tremulous movements; "His nostrils palpitated" ;

2. (

• tremor ,
• quake ,

) shake with seismic vibrations; "The earth was quaking" ;