To surround and advance upon
To confine within a limited area
To shut in all around
To put in an envelope, wrapper, etc.
Hills nearly enclose the city, protecting it from the ocean fogs.
I enclose a ticket, hoping that you will come.
Steep rocky hills enclose the vale.
The r6th-century lines of fortification enclose a very much larger area than the Roman city, forming a great loop to the west, and also including a considerable space on the left bank of the river.
The so-called Chatham Lines enclose New Brompton, a part of the borough of Gillingham.