What is the meaning of Good_morning?

Used as a greeting when meeting someone for the first time in the morning.

A parting in the morning.

Used to greet someone who has just awakened (irrespective of the time of day).

Said to someone who has come to a belated realization.

A greeting consisting of the interjection.

An exercise performed by bending forward at the waist and then returning to a standing posture, while bearing a barbell or resistance band across the shoulders.

good morning (used as a greeting when meeting someone for the first time in the morning.)

Source: wiktionary.org