n.
a pale yellow edible fatty substance made by churning cream and used as a spread or in cooking.
v.
- spread with butter.
-
(butter someone up)
informal flatter someone.
Phrase
- look as if butter wouldn't melt in one's mouth
informal appear innocent while being the opposite.
Etymology
OE butere, of W. Gmc origin, based on L. butyrum, from Gk bouturon.