black gum

Short definition from Wiktionary

Noun

1. 1
   A tree native to eastern North America, Nyssa sylvatica.
2. 2
   Certain eucalyptus trees of Australia: Eucalyptus aggregata, of south eastern Australia
3. 3
   Certain eucalyptus trees of Australia: Eucalyptus ovata, of south eastern Australia
4. 4
   Used other than figuratively or idiomatically: see black, gum.