A soft yellowish or whitish emulsion of butterfat, water, air, and sometimes salt, churned from milk or cream and processed for use in cooking and as a food.
Any of various substances similar to butter, especially:
A spread made from fruit, nuts, or other foods: apple butter.
A vegetable fat having a nearly solid consistency at ordinary temperatures.
Flattery.
To put butter on or in.
butter up To praise or flatter excessively: You're always buttering up the boss.