Godan verb with 'ku' ending, Transitive verb
to break (into pieces); to smash; to crush; to shatter; to grind (into powder); to pound
ピックは硬い地表を砕くために用いられる長い取っ手の道具だ。A pick is a long handled tool used for breaking up hard ground surfaces. to shatter (someone's hopes, confidence, etc.); to crush; to frustrate
to simplify; to make easy to understand
Also written 摧く【くだく】