(slang, Canada, US) To work exceptionally hard.

(slang, vulgar) A sex toy designed for insertion into the anus and rectum. / (athletics) A rubber cap fitted to the end of the pole in pole vaulting.

Made with or tasting of butter. / Resembling butter in some way, such as yellow color or smooth texture. / (informal) Marked by insincere flattery; obsequious.

A room for keeping food or beverages; a storeroom. / (UK) A room in a university where snacks are sold.

Linaria vulgaris, a flowering plant native to Europe and northern Asia; yellow toadflax; common toadflax. / Triphysaria eriantha, a flowering plant native to North America; johnny-tuck.

Third-person singular simple present indicative form of head butt

Any buddleia, genus Buddleja. / The butterfly weed (Asclepias tuberosa). / The blue butterfly bush (Rotheca myricoides, syn. Clerodendrum ugandense).

The fatty components of milk and other dairy products.

A cooking fat made by gently heating butter and separating the solids from the butterfat.

present participle of head butt