\Top"ple\, v. i. [imp. & p. p. {Toppled}; p. pr. & vb. n. {Toppling}.] [From {Top} summit.] To fall forward; to pitch or tumble down. Though castles topple on their warders' heads. --Shak.
\Top"ple\, v. t. To throw down; to overturn. He topple crags from the precipice. --Longfellow.