quietus

n. [ LL. quietus quit, discharged, L., at rest, quiet, dead. See Quiet, a., and cf. Quit, a. ] Final discharge or acquittance, as from debt or obligation; that which silences claims; (Fig.) rest; death. [ 1913 Webster ]

When he himself might his quietus make
With a bare bodkin. Shak. [ 1913 Webster ]