any of various plants, especially of the genera Ipomoea and Convolvulus, as I. purpurea, a twining plant having cordate leaves and funnel-shaped flowers of various colors, often opening only in the morning.
2.
a racehorse that runs faster in morning workouts than in afternoon races.
n. a morning erection. : Always happy to see the morning glory. , Bobby has a morning missile instead of an alarm clock.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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