drift off 1verbdomain: hygienePrinceton WordNet [ver.3.1]EnglishDefinitionchange from a waking to a sleeping stateReport errorPath to highest hypernymMorphologySynset graphExamples1.he always falls asleep during lecturesSynonymsfall asleep 1dope off 1flake out 1nod off 1drop off 2doze off 1drowse off 1