noun
1. : either of two trees of the genus Nyssa:
a. : a tree ( Nyssa sylvatica ) of the eastern, central, and southern United States having close-grained wood, entire obovate or ovate leaves, and small blue-black drupaceous fruits with nearly ribless stones — called also pepperidge, sour gum, tupelo
b. : a tree ( N. biflora ) of the southern United States with spatulate leaves and ribbed stones
2. : white fir 1a(1)
3. : black sally