Meaning of wakeful

Definition of wakeful

(adj) carefully observant or attentive; on the lookout for possible danger; "a policy of open-eyed awareness"; "the vigilant eye of the town watch"; "there was a watchful dignity in the room"; "a watchful parent with a toddler in tow"
(of sleep) easily disturbed; "in a light doze"; "a light sleeper"; "a restless wakeful night"
marked by full consciousness or alertness; "worked every moment of my waking hours"

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