The Collaborative International Dictionary
Planer tree
Planer tree \Plan"er tree`\ [From J. S. Planer, a German botanist.] (Bot.) A small-leaved North American tree ( Planera aquatica) related to the elm, but having a wingless, nutlike fruit.
Wiktionary
planer tree
n. A small-leaved North American tree ((taxlink Planera aquatica species noshow=1)) related to the elm, but having a wingless, nutlike fruit.