1. (noun) the time period between dawn and noon

• forenoon
• morn
• morning time

2. (noun) a conventional expression of greeting or farewell

• good morning

3. (noun) the first light of day

• aurora
• break of day
• break of the day
• cockcrow
• dawn
• dawning
• daybreak
• dayspring
• first light
• sunrise
• sunup

4. (noun) the earliest period

• dawn

1. (noun) the time period between dawn and noon

• period
• period of time
• time period

2. (noun) a conventional expression of greeting or farewell

• farewell
• word of farewell
• greeting
• salutation

3. (noun) the first light of day

• hour
• time of day

4. (noun) the earliest period

• start

1. (noun) the first light of day

• auroral
• auroral
• aurorean
• aurorean
• dawn
• dawn

2. (noun) the earliest period

• dawn

1. (noun) the first light of day

• sundown
• sunset