gum tree

any tree that exudes gum, as a eucalyptus, the sour gum, or the sweet gum.

any of various other gum-yielding trees, as the sapodilla.

Origin of gum tree

An Americanism dating back to 1670–80

But the gum-tree is as distinctive of Australia as are the emu and the kangaroo.

Australian Pictures |Howard Willoughby
"He's up a gum-tree instead of under one," he said enigmatically.

The Lost Valley |J. M. Walsh
Some of them are merely of canvas, propped up by gum-tree branches, to protect them from the wind and weather.

A Boy's Voyage Round the World |The Son of Samuel Smiles
He was dreadfully destructive with his pack-bags, for he would never get out of the road for anything less than a gum-tree.

Australia Twice Traversed, The Romance of Exploration |Ernest Giles

The afternoon was spent in the plantation garden, where an Australian gum-tree was in full flower.

The Story of My Life, volumes 4-6 |Augustus J. C. Hare