slave

Noun

• someone entirely dominated by some influence or person
  • a slave to fashion
    
  • a slave to cocaine
    
  • his mother was his abject slave
    

• someone who works as hard as a slave

• a person who is owned by someone

Verb

• work very hard, like a slave

Related words

• Synonyms: 
  striver , hard worker , break one's back , buckle down , knuckle down