Dictionary
mon•o•plane
Pronunciation: (mon'u-plān"), [key]—
n.
1. an airplane with one main sustaining surface or one set of wings.
2. Naut.a planing craft the bottom of which is in an unbroken fore-and-aft line.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.