slave

slave (http://definr.com/slave)

     adj 1: held in servitude; "he was born of slave parents" [syn: slave(a)]
            [ant: free]
     2: concerned with slaves; "slave quarters"; slave trader";
        "slave market" [syn: slave(a)]
     n 1: a person who is owned by someone
     2: someone who works as hard as a slave [syn: striver, {hard
        worker}]
     v : work very hard, like a slave [syn: break one's back, {buckle
         down}, knuckle down]