Join Us On

An Encyclopædia Britannica Company

Spanish Central

Browse Dictionary Browse Thesaurus

Get our free apps!iPhone•iPad•Android

Word of the Day

Blog: Words at Play

Dictionary

bird louse

noun

Definition of BIRD LOUSE

ADVERTISEMENT

First Known Use of BIRD LOUSE

1826

Medical Dictionary

bird louse

noun

Medical Definition of BIRD LOUSE

Learn More About BIRD LOUSE

Britannica.com: Encyclopedia article about "bird louse"

Browse

Next Word in the Dictionary: bird malariaPrevious Word in the Dictionary: birdlingAll Words Near: bird louse

ADVERTISEMENT

Seen & Heard

What made you want to look up bird louse? Please tell us where you read or heard it (including the quote, if possible).

View Seen & Heard Highlights from Around the Site

Test Your Vocabulary!

10 Charming Words for Nasty People

Put-downs with flair

When "Literally" isn't, well, literal

How to use a word that (literally) drives some people nuts.

Know what this is?

Test your vocab with our fun, fast game

Ailurophobia, and 9 other unusual fears

Join Us

Merriam-Webster
on Facebook

Merriam-Webster
on Twitter

Bookstore: Digital and Print

Merriam-Webster references for Mobile, Kindle, print, and more.

See All

Other Merriam-Webster Dictionaries

© Merriam-Webster, Incorporated