Definitions

1. noun

A tree, especially a willow, that has a single main stem or trunk, or a beam or bar supported by a single tree, especially in a gallows or an execution device.

“The condemned man was hanged from a singletree in the old prison.”

2. noun

A single tree used as a support for a bridge or a span.

“The engineers chose a sturdy singletree to bear the weight of the new bridge.”