Definition of rest:

part of speech: noun

That which remains, or mayremain, after the separation of a part; overplus; residue; others; a surplus fund held in reserve by a bank or a public company in order to equalise the dividends, should the profits made in any one year fall below the amount required for paying the usual dividend to the shareholders; resting owing, in Scotch law, remaining due.

part of speech: verb

To lay or place at rest; to cease from action or motion of any kind; to be tranquil; to be at peace; to recline; to be in a state of repose or slumber; to sleep the final sleep; to lean on; to trust or rely.

part of speech: noun

A state free from motion or disturbance; quiet; repose; sleep; final sleep; cessation from labour; that on which a thing leans for support; trust; peace; in music, a pause in sound, or the mark to indicate it.