The Collaborative International Dictionary of English v.0.48:
Pearmain \Pear"main\, n. (Bot.) The name of several kinds of apples; as, the blue pearmain, winter pearmain, and red pearmain. [1913 Webster]WordNet (r) 3.0 (2006):
Pearmain n 1: any of several varieties of apples with red skins