What does WORK mean?

verb

1. exert oneself by doing mental or physical work for a purpose or out of necessity“I will work hard to improve my grades”
2. be employed“Is your husband working again?”
3. have an effect or outcome; often the one desired or expected“The voting process doesn't work as well as people thought”
4. perform as expected when applied“The washing machine won't go unless it's plugged in”
5. shape, form, or improve a material“work stone into tools”
6. give a workout to“Some parents exercise their infants”
7. proceed along a path“work one's way through the crowd”
8. operate in a certain place, area, or specialty“She works the night clubs”