from The Century Dictionary and Cyclopedia
- n. One of the trees which produce mast; specifically, the cork-tree.
- n. In India, a tall tree, Polyalthia (Guatteria) longifolia, handsome and much planted along avenues: so named doubtless from its erect habit, its wood being useless.
Sorry, no etymologies found.
He had been cutting down an enormous mast-tree, which was needed for a prop to the dam, and had hauled it down with two horses, one of which was a half-broken gray colt, unused to pulling in a team.