The noun morning has 4 senses (first 2 from tagged texts)
1. (87) morning, morn, morning time, forenoon -- (the time period between dawn and noon; "I spent the morning running errands")
2. (2) good morning, morning -- (a conventional expression of greeting or farewell)
3. dawn, dawning, morning, aurora, first light, daybreak, break of day, break of the day, dayspring, sunrise, sunup, cockcrow -- (the first light of day; "we got up before dawn"; "they talked until morning")
4. dawn, morning -- (the earliest period; "the dawn of civilization"; "the morning of the world")