∙ A soft, fatty foodstuff made by churning the cream of milk (generally cow's milk). uncountable
∙ Any specific soft substance. countable, obsolete, chemistry
∙ Any of various foodstuffs made from other foods or oils, similar in consistency to, eaten like or intended as a substitute for butter (preceded by the name of the food used to make it). uncountable
Verb
∙ To spread butter on. transitive
∙ to move one's weight backwards or forwards onto the tips or tails of one's skis or snowboard so only the tip or tail is in contact with the snow.
∙ To increase (stakes) at every throw of dice, or every game. slang, obsolete, transitive