Drowse

• (n.) A slight or imperfect sleep; a doze. • (v. i.) To sleep imperfectly or unsoundly; to slumber; to be heavy with sleepiness; to doze. • (v. t.) To make heavy with sleepiness or imperfect sleep; to make dull or stupid.
Found on http://thinkexist.com/dictionary/meaning/drowse/

drowse

verb be on the verge of sleeping; `The students were drowsing in the 8 AM class`
Found on https://www.encyclo.co.uk/local/20974

Drowse

Drowse intransitive verb [ imperfect & past participle Drowsed ; present participle & verbal noun Drowsing .] [ Anglo-Saxon dr...sian , dr...san , to sink, become slow or inactive; confer OD. droosen to be sleepy, fa...
Found on http://www.encyclo.co.uk/webster/D/125

Drowse

Drowse noun A slight or imperfect sleep; a doze. « But smiled on in a drowse of ecstasy.» Mrs. Browning.
Found on http://www.encyclo.co.uk/webster/D/125

Drowse

Drowse transitive verb To make heavy with sleepiness or imperfect sleep; to make dull or stupid. Milton.
Found on http://www.encyclo.co.uk/webster/D/125

drowse

[v] - be on the verge of sleeping
Found on http://www.webdictionary.co.uk/definition.php?query=drowse
No exact match found