Fence n. : That which fends off attack or danger; a defense; a protection; a cover; security; shield.

Fence n. : An inclosure about a field or other space, or about any object; especially, an inclosing structure of wood, iron, or other material, intended to prevent intrusion from without or straying from within.

Fence n. : A projection on the bolt, which passes through the tumbler gates in locking and unlocking.

Fence n. : Self-defense by the use of the sword; the art and practice of fencing and sword play; hence, skill in debate and repartee. See Fencing.

Fence n. : A receiver of stolen goods, or a place where they are received.

Fence v. t. : To fend off danger from; to give security to; to protect; to guard.

Fence v. t. : To inclose with a fence or other protection; to secure by an inclosure.

Fence v. i. : To make a defense; to guard one's self of anything, as against an attack; to give protection or security, as by a fence.

Fence v. i. : To practice the art of attack and defense with the sword or with the foil, esp. with the smallsword, using the point only.

Fence v. i. : Hence, to fight or dispute in the manner of fencers, that is, by thrusting, guarding, parrying, etc.

Example:
im going to buy a Fence for my dog. was wondering should i buy a regular or eletric Fence?

Taxonomy
fence, fencing, ditch, boundary, laws, landowners, livestock, free encyclopedia, Boundary fencing, land ownership, Slate, population, open range, ownership, predators, United States, rail fencing, moveable.

Defination from the web:
fence is a freestanding structure designed to restrict or prevent movement across a boundary. ... Concrete fence, easy to install and highly durable. Chicken wire, light wire mesh for keeping predators out and chickens or other small livestock in ...