adj. 1. that works;
Ex. the working population, a working model of a helicopter.
2. of, for, or used in working.
Ex. working hours, working clothes.
3. used to operate with or by.
Ex. working expenses, a working majority.

expr. workings,
a. operation; action.
Ex. the workings of the mind.
b. the parts of a mine, quarry, or tunnel, where work is being or has been done.
Ex. A warning system ... for use at a colliery where methane was extracted from

noun 1. the method or manner of work; operation, action.
Ex. Do you understand the working of this machine?
2. the performance of work or labor.
Ex. laws to prevent working Sunday.
3a. the manufacture, production, or preparation

working, noun, adjective.