A village or a political division of a city or an incorporated town or municipality, that is smaller than a city which may be perceived as part of a larger metropolitan area: In the metropolis of New York, Queens is a borough where many people live.

A small donkey often used as a pack animal: The miners used a burro to carry their mining equipment over the mountains.

1. To take for one's use: Carol went to the library to borrow a few books.
2. To use an idea, saying, etc. that was thought up by someone else: The speaker decided to borrow several phrases in his presentation that came from Winston Churchill.

A small hole made in the ground as by a rabbit for habitation and refuge: Beatrice Potter’s story book character of Peter Rabbit and his family lived in a comfortable burrow.

To tunnel by digging either by hand or with machinery: The engineers used a large bore to burrow through the hillside while building the railroad.