Also see definition of "Crashing" in Word Study
Crashing
CRASHING [isbe]
CRASHING - krash'-ing (shebher): This word, meaning "a breach," figuratively "destruction," is translated "crashing" in Zeph 1:10: "a great crashing from the hills," representing the doom to fall on evil-doers in Jerusalem, as the enemy advanced against the city from the north.
Also see definition of "Crashing" in Word Study