/ ˈdraʊzi; NAmE / adjective ( drows·ier , drowsi·est )
1.
tired and almost asleep
SYN sleepy :
The tablets may make you feel drowsy.
2.
making you feel relaxed and tired :
a drowsy afternoon in the sunshine
► drows·ily / -əli; NAmE / adverb
► drow·si·ness noun [ U ]:
The drugs tend to cause drowsiness.
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WORD ORIGIN
late 15th cent.: probably from the stem of Old English drūsian be languid or slow , of Germanic origin; related to dreary .