picket
a pointed wooden stake driven into the ground, typically to form a fence or palisade or to tether a horse.
@Acer Look up 'picket fence' in an image search to get a clear idea.
When I search "picket" and "picket fence" I get very similar/same result.
@Acer That's right, that word is used the most in combination with the fence.
It does have some more meanings than those wooden stakes for a fence, though.
