gullwing
noun
Definitions
A position of sails in a fore-and-aft rigged sailboat, in which the mainsail is set to the leeward and the jib to the windward. This position may be used when running (almost) straight downwind.
noun
Definitions
One of a pair of doors, as of an aircraft, resembling a gull's wings when open.
adjective
Definitions
(of a door, flap, wings etc.) Resembling a gull's wings.