Definitions of medlar:

• noun:   crabapple-like fruit used for preserves
• noun:   South African globular fruit with brown leathery skin and sweet-acid pithy flesh
• noun:   small deciduous Eurasian tree cultivated for its fruit that resemble crab apples
• noun:   small deciduous tree of southern Africa having edible fruit
• name:  A surname (very rare: popularity rank in the U.S.: #50458)