peanut butter

:  a low-branching widely cultivated annual herb (Arachis hypogaea) of the legume family with showy yellow flowers having a peduncle which elongates and bends into the soil where the ovary ripens into a pod containing one to three oily edible seeds

:  its seed or seed-containing pod

:  an insignificant or tiny person

:  insignificant, petty

:  a solid emulsion of fat globules, air, and water made by churning milk or cream and used as food

:  a buttery substance: such as

:  any of various fatty oils remaining nearly solid at ordinary temperatures

:  to spread with or as if with butter