/top"euhl/ , v. , toppled, toppling .
v.i.
1. to fall forward, as from having too heavy a top; pitch; tumble down.
2. to lean over or jut, as if threatening to fall.
v.t.
3. to cause to topple.
4. to overthrow, as from a position of authority: to topple the king.
[ 1535-45; earlier top to tilt, topple (see TOPE 1 ) + -LE ]
Syn. 4. defeat, vanquish, overcome, overpower.