To surround with a wall, fence, etc.
to enclose lands
To insert into a container, usually an envelope or package
Please enclose a stamped self-addressed envelope if you require a reply.
Contained; held within a container.
Fenced in or surrounded.
(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.