hitching post

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A post to which an animal, especially a horse, is hitched.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a post to which a horse (or other animal) may be tethered to prevent it from straying
• noun slang A main shelter at a recreation place (e.g., a campground) where people go to socialize, eat and purchase small items.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a fixed post with a ring to which a horse can be hitched to prevent it from straying