Open English Wordnet
Nouns
(n)workera person who works at a specific occupation“he is a good worker” (n)proletarian, prole, workera member of the working class (not necessarily employed)“workers of the world — unite!” (n)workersterile member of a colony of social insects that forages for food and cares for the larvae (n)actor, doer, workera person who acts and gets things done“he's a principal actor in this affair”,
“when you want something done, get a doer”,
“he's a miracle worker” 