1. to break (into pieces), to smash, to crush, to shatter, to grind (into powder), to pound

transitive verb Godan verb with 'ku' ending

2. to shatter (someone's hopes, confidence, etc.), to crush, to frustrate

Godan verb with 'ku' ending transitive verb

3. to simplify, to make easy to understand

Godan verb with 'ku' ending transitive verb