worker (
http://definr.com/worker)
n 1: a person who works at a specific job; "he is a good worker"
[ant:
nonworker]
2: a member of the working class (not necessarily employed);
"workers of the world--unite!" [syn:
proletarian,
prole]
3: sterile member of a colony of social insects that forages
for food and cares for the larvae
4: a 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" [syn:
actor,
doer]