(usually in the plural) Operation; action.
Method of operation.
The incidental or subsidiary calculations performed in solving an overall problem.
Be sure to check your working.
Fermentation.
(of bodies of water) Becoming full of a vegetable substance.
A place where work is carried on.
the abandoned mine workings
The internal mechanism of some device or system.
The parts of a quarry or mine that are being (or has been) worked.