'manna gum' definitions:

Definition of 'manna gum'

From: WordNet
noun
Tall tree yielding a false manna [syn: manna gum, Eucalyptus viminalis]

Definition of 'manna gum'

From: GCIDE
  • manna gum \manna gum\ n. (Bot.), A tall tree (Eucalyptus viminalis) yielding a false manna. [WordNet 1.5]