The internal mechanism of some device or system. / The parts of a quarry or mine that are being (or has been) worked.

plural of working.

(usually in the plural) Operation; action. / Method of operation. / (arithmetic) The incidental or subsidiary calculations performed in solving an overall problem. / Fermentation.

present participle of work

That is or are functioning. / That suffices but requires additional work. / In paid employment. / Of or relating to employment. / Enough to allow one to use something. / Used in real life; practical.

present participle of work on

present participle of work at

Followed by in (or at, etc.) Said of one's workplace (building), or one's department, or one's trade (sphere of business). / Followed by as. Said of one's job title

Labour, occupation, job. / The place where one is employed. / (by extension) One's employer. / (dated) A factory; a works. / Effort expended on a particular task.

(transitive) To shape, form or improve something. / (transitive) To exercise influence on someone.