worker

Noun
  1. A person who works at a specific occupation (synset 109655706)
    "he is a good worker"
  2. A member of the working class (not necessarily employed) (synset 110501296)
    "workers of the world--unite!"
  3. Sterile member of a colony of social insects that forages for food and cares for the larvae (synset 102210101)
  4. A person who acts and gets things done (synset 109786620)
    "he's a principal actor in this affair"; "when you want something done get a doer"; "he's a miracle worker"

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