معنی کلمه :‌ hydrometeor

To fall forward; to pitch or tumble down. Though castles topple on their warders' heads. Shak. To throw down; to overturn. He topple crags from the precipice. Longfellow.

A meteor or atmospheric phenomenon dependent upon the vapor of water; -- in the pl., a general term for the whole aqueous phenomena of the atmosphere, as rain, snow, hail, etc.