The phrase "foot fence" refers to a type of fence that is built at the bottom of something, like a wall or a slope, to prevent people from crossing or to keep something inside. Full definition
Make sure to have a 4 - foot fence around all sides of the pool to separate the pool from the house. (twinmom.com)
Personally, my dogs have about 5,000 square feet fenced for their use. (petpeoplesplace.com)
They can scale a six foot fence if motivated and can squeeze through the tiniest of openings and steal your Thanksgiving turkey off of your kitchen counter or the cat food off of the top of the washing machine and can catch, birds, opposums, lizards, snakes, rabbits, squirrels and just about anything else that catches their fancy, and is small and not faster than them. (italiangreyhound.org)