burrow, borough, burro

Burrow or burrow means the home an animal has dug in the ground--
What shall we do? The groundhog won't come out of his burrow!
Some small animals live in an underground burrow.
Burrow is also a verb ( action word ), meaning to dig in the ground, so as to make a hideout or a place to live--
Look--the groundhog has been burrowing all day.
The creature will burrow under the roots of a tree to make a sturdy home.

Borough or borough ( rhymes with burrow ) means a small town or part of a town--
A small town that doesn't provide all of its own municipal services is sometimes called a borough.
Brooklyn is a borough of New York City.

Burro or burro ( rhymes with burrow ) means the small animal that looks like a tiny donkey--
They had a pet burro that would let the children ride on its back.
A burro can sometimes carry a small load for people.

Now that you know that, you can say--
"The burro stumbled into the rabbit's burrow, and its braying could be heard all over the borough."

Note--not to be confused with borrow, meaning to ask for the use of an item, meaning to return it--
We go to the library to borrow books.
May I borrow your pen?