Definition of water tree in US English:

water tree

noun

  • Any of various trees or shrubs yielding drinkable sap, generally from the stems, as the African water vine, Tetracera alnifolia, or the roots, as the Australian tree Hakea leucoptera (also called needlebush).

Origin

Early 17th century (in an earlier sense). From water + tree.

Pronunciation

water tree

/ˈwɔːtə ˌtriː/