<p><strong>Verb (used without object):</strong></p><ul><li>To be sleepy or half-asleep.</li><li>To be dull or sluggish.</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>To pass or spend (time) in drowsing (often followed by away): He drowsed away the morning.</li><li>To make sleepy.</li></ul><p><strong>Noun:</strong></p><ul><li>A sleepy condition; state of being half-asleep.</li></ul>