ALL meanings of goodnight
good night
G g - noun goodnight A farewell said in the evening or before going to sleep. 1
- interjection goodnight on sb going to bed 1
- interjection goodnight in evening: goodbye 1
- noun goodnight indicating farewell 1
- noun goodnight a farewell or leave-taking: He said his good-nights before leaving the party. 1
- convention goodnight You say 'Goodnight' to someone late in the evening before one of you goes home or goes to sleep. 0
- sentence substitute goodnight a conventional expression of farewell, or, rarely, of greeting, used in the late afternoon, the evening, or at night, esp when departing to bed 0