a name given to several perennial plants having showy flowers of two shades of yellow, or of yellow and orange, such as Narcissus incomparabilis in Europe, and the toadflax (Linaria vulgaris) in the United States; the latter is a naturalized weed in North America. [1913 Webster]

anchovy butter, apple butter, bacon and eggs, bercy butter, bread and butter, bread and butter pickle, brown butter, butter, butter bean, butter churn, butter cookie, butter daisy, butter dish, butter knife, butter up, clarified butter, cock's eggs, cocoa butter, colbert butter, drawn butter, eggs, eggs benedict, garlic butter, ham and eggs, lemon butter, lobster butter, meuniere butter, nut butter, onion butter, peanut butter, pimento butter, scrabbed eggs, scrambled eggs, shrimp butter, snail butter, witches' butter, yak butter