地震

(1)an instance of agitation of the earth's crust; "the first shock of the earthquake came shortly after noon while workers were at lunch"

(2)一瞬の地核の激しい揺れ

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

(4)火山活動により断層面に沿った地下運動によって、地球の表面が揺れて震動すること

(5)a small earthquake

(6)小さな地震