2.verbTo insert into a container, usually an envelope or package
"Please enclose a stamped self-addressed envelope if you require a reply."
3.adjectiveContained; held within a container.
4.adjectiveFenced in or surrounded.
5.adjective(of a division within a pipe organ surrounded by a wooden box, one or more sides of which contain slats that can be opened or closed in order to increase or decrease volume) Having closed slats.