/shut"in'/ , adj.
1. confined to one's home, a hospital, etc., as from illness.
2. Psychiatry. disposed to desire solitude; withdrawn; asocial.
3. (of an oil or gas well) temporarily sealed up.
n.
4. a person confined by infirmity or disease to the house, a hospital, etc.
5. Also called shut-in well . an oil or gas well that has been closed down.
[ 1840-50, Amer.; adj., n. use of v. phrase shut in ]