蹶

Han character

 * 1) stumble, fall down
 * 2) trample

Definitions

 * 1) to tumble; to fall down
 * 2) to run
 * 3) to fail
 * 4) to step on; to tread on
 * 5) rapidly; suddenly

Kanji

 * 1) to tumble; to fall down
 * 2) to defeat; to topple
 * 3) to spring out

Etymology 1
From.

Etymology 2
From.