foreshock
fore shock |ˈfôrˌSHäk ˈfɔrˌʃɑk | ▶noun a mild tremor preceding the violent shaking movement of an earthquake.
fore |shock |ˈfɔːʃɒk | ▶noun a mild tremor preceding the violent shaking movement of an earthquake.
The Wordsmith Dictionary
The Wordsmith Dictionary