noun
1.
a.
(1) : an American ash ( Fraxinus americana ) having leaves pale green or silvery white below — see tree illustration
(2) : the hard brownish wood of white ash used for tools, furniture, and interior finishings
b. : green ash
c. : fringe tree
d. : any of several Australian eucalypts (especially Eucalyptus coriacea, E. fraxinoides, or E. globulus )
e. : white alder 2
2. : oar 1a