plum

n. 1 a small sweet oval fleshy fruit with a flattish pointed stone. B tree bearing this. 2 reddish-purple colour. 3 raisin used in cooking. 4 colloq. Something prized (often attrib.: plum job).  have a plum in one's mouth have an affectedly rich voice. [latin: related to *prune1]

n. The edible drupaceous fruit of the Prunus domestica, and of several other species of Prunus; also, the tree itself, usually called plum tree.