morning in WordNet English dictionary

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