Commendable hard work in the service of a good cause.

plural of work shift

plural of work-place

(mining) The construction of passages, air-shafts, etc.

(originally US, informal) An ordinary person who works in a non-management position, especially one who works for wages rather than a salary.

(New Zealand, Australia) A group of volunteers doing charitable work.

The pressure that something that operates under and contains pressure normally works at; the specified maximum working pressure is set below the test pressure.

Russian decorative niello work

A shift (change of workers).

(US, slang) To rob drunks on the subway.