Meaning of “morning” - Learner’s Dictionary

morning

noun [ C, U ] us uk /ˈmɔːnɪŋ/
I had to get up at five o'clock this morning.What time do you leave for school in the mornings?I swim thirty lengths of the pool most mornings.I lay in till eleven o'clock this morning.I buy a paper every morning.

A1 the first half of the day, from the time when the sun rises or you wake up until the middle of the day:

Friday morning
tomorrow morning
I got up late this morning.
in the morning

A1 during the early part of the day:

I listen to the radio in the morning.

B1 tomorrow morning:

I'll pack my bags in the morning.
3/4, etc o'clock in the morning

B1 3/4, etc o'clock in the night:

My car alarm went off at 3 o'clock in the morning.
(Good) morning.

A1 used to say hello to someone in the morning

(Definition of “morning” from the Cambridge Learner’s Dictionary © Cambridge University Press)