Wiktionary
she-oak
n. 1 (context AU English) Any of various trees and shrubs of the family Casuarinaceae growing in Australasia and parts of Asia. 2 (context AU slang now rare English) beer.
WordNet
she-oak
n. any of several Australian trees of the genus Casuarina
Usage examples of "she-oak".
The poems about dying boundary-riders, and lonely graves under mournful she-oaks, are the direct outcome of the poet's too close association with that soul-destroying animal.