Easton's Bible Dictionary
The first earthquake in Palestine of which we have any record happened in the reign of Ahab (1 Kings 19:11, 12). Another took place in the days of Uzziah, King of Judah (Zechariah 14:5). The most memorable earthquake taking place in New Testament times happened at the crucifixion of our Lord (Matthew 27:54). An earthquake at Philippi shook the prison in which Paul and Silas were imprisoned (Acts 16:26).
Noah Webster's New International Dictionary of the English Language
1. (n.) A shaking, trembling, or concussion of the earth, due to subterranean causes, often accompanied by a rumbling noise. The wave of shock sometimes traverses half a hemisphere, destroying cities and many thousand lives; -- called also earthdin, earthquave, and earthshock.
2. (a.) Like, or characteristic of, an earthquake; loud; starling.