(algebra) An element of an algebraic structure which when applied, in either order, to any other element via a binary operation yields the other element.

The human experience of feeling a sudden sense of insight upon making a discovery or realization.

(fiction) The main setting of J.R.R. Tolkien's Lord of the Rings and other works. / Alternative form of Middle Earth: the Earth.

In a job; working. / Used; in use.

simple past tense and past participle of employ

(obsolete) The little finger.

A variation of Modern English spoken predominantly by lower socioeconomic class individuals of African descent, usually in urban or suburban surroundings in the United States.

(Cockney rhyming slang) A state (of upset, worry).

(idiomatic) Miscellaneous things.

(pharmacology) The tendency of any medication or treatment, even an inert or ineffective one, to exhibit results simply because the recipient believes that it will work.