Drowse

Part of speech: noun (n.)

A slight or imperfect sleep; a doze. But smiled on in a drowse of ecstasy. Mrs. Browning.

Part of speech: verb (v.)

To sleep imperfectly or unsoundly; to slumber; to be heavy with sleepiness; to doze. "He drowsed upon his couch." South. In the pool drowsed the cattle up to their knees. Lowell.

Part of speech: verb (v.)

To make heavy with sleepiness or imperfect sleep; to make dull or stupid. Milton.