A preparation of unsalted butter in which the butterfat and milk solids are allowed to separate and brown over a heat, used in French pastry or as a sauce.

brown butter

(idiomatic) To be aware of where one's interests lie in a situation.

A kitchen tool designed to produce decorative butter shapes for use in food decoration.

plural of butterfly knife

plural of butterfly effect

(uncountable, US) Peanut butter and jelly (or jam) that is spread on bread to make a sandwich. / (countable, US) A sandwich consisting of bread spread with layers of peanut butter and jelly.

A mild lettuce, Lactuca sativa.

(archaic) The avocado fruit.

The avocado. / A juicy, delicate-textured French variety of pear.