Definition of "grogginess" [grog•gi•ness]

• The characteristic or quality of being groggy. (noun)
• Tenderness or stiffness in the foot of a horse, resulting in a hobbling gait. (noun)

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• "Sorry this entry has meandered so; can I claim it's grogginess from the cold?"
• "The small amount of caffeine helps not because it "speeds up your metabolism", but because it gets rid of the grogginess."
• "It was a feeling I would come to know well—the haze and the grogginess—almost as well as its opposite (lack-of-sleep inertia), during the three years I would spend in the Boston Combined Residency Program (BCRP) in pediatrics."