cashew apple

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The soft, swollen, pear-shaped edible stalk of the fruit of the cashew.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An oval to pear-shaped accessory fruit or false fruit that develops from the receptacle of the cashew flower (the true fruit being the cashew nut).