What is "garlic butter"

n. butter seasoned with mashed garlic

Garlic butter, also known as beurre à la bourguignonne, is a compound butter used as a flavouring for Escargots à la bourguignonne. It is also spread on bread or used in shrimp scampi. It is composed of butter and garlic pounded into a paste. These ingredients are well blended and chilled before use.