O.E.
scyttan "to put in place so as to fasten a door or gate," from W.Gmc.
*skutjanan (cf. O.Fris.
schetta, M.Du.
schutten "to shut, shut up, obstruct"), from P.Gmc.
*skut- "project" (see
shoot). Meaning "to close by folding or bringing together" is from c.1366. Sense of "to set (someone) free (from)" (c.1500) is obsolete except in dial. phrases such as
to get shut of. Colloquial
shut-eye for "sleep" is from 1899. To
shut (one's) mouth "desist from speaking" is recorded from 1340.
Shut up (v.) first recorded 1840.
Shut-in "person confined from normal social intercourse" is from 1904.
Shut out in baseball sense is from 1881 (v.), 1889 (n.).