Origin Unknown. Formally, it appears to be a variant of borough, but this sense is not known in Old English burh or in any Germanic cognate languages.
burrow (plural burrows)
- A tunnel or hole, often as dug by a small creature.
- 1922, Margery Williams, The Velveteen Rabbit
- But very soon he grew to like it, for the Boy used to talk to him, and made nice tunnels for him under the bedclothes that he said were like the burrows the real rabbits lived in.
burrow (third-person singular simple present burrows, present participle burrowing, simple past and past participle burrowed)
- To dig a tunnel or hole.