brunion

plural brunions

1. A hybrid of a plum and a peach.

   But no sort of Brunions are in so much Esteem as their Peaches, because they do not quit their Stones.

   1724, Philip Miller, The Gardeners and Florists Dictionary, page 22

   1 more example

   The eldest Fairy put her finger into her mouth and whistled three times, then cried, 'Apricots, peaches, nectarines, brunions, cherries,[…]

   1855, Marie-Catherine Aulnoy, Fairy Tales, page 453

2. A nectarine