adjective

1. that works
2. of, for, used in, or taken up by work a working day, working clothes
3. sufficient to allow work to be done a working majority
4. on which further work is or may be based a working hypothesis
5. moving or jerking convulsively, as from emotion: said of the face, features, etc.

noun

1. the act or process of a person or thing that works
2. the process of forming or shaping something
3. convulsive movement or jerking, as of the face
4. slow or gradual progress involving great effort or exertion
5. a part of a mine, quarry, etc. where work is or has been done