Search Result for "nighttime": 
Wordnet 3.0

NOUN (1)

1. the time after sunset and before sunrise while it is dark outside;
[syn: night, nighttime, dark]



The Collaborative International Dictionary of English v.0.48:

Nighttime \Night"time`\, n.
   The time from dusk to dawn; -- opposed to daytime.
   [1913 Webster]


WordNet (r) 3.0 (2006):

nighttime
    n 1: the time after sunset and before sunrise while it is dark
         outside [syn: night, nighttime, dark] [ant: day,
         daylight, daytime]