Source : Webster's Revised Unabridged Dictionary (1913)

Wide-awake \Wide`-a*wake"\ (w[imac]d`[.a]*w[=a]k"), a.
   Fully awake; not drowsy or dull; hence, knowing; keen; alert.
   --Dickens.

Wide-awake \Wide`-a*wake"\, n.
   A broad-brimmed, low-crowned felt hat.

Source : WordNet®

wide-awake
     adj 1: fully awake; "the unsleeping city"; "so excited she was
            wide-awake all night" [syn: {unsleeping}]
     2: fully alert and watchful; "played heads-up ball" [syn: {heads-up}]