1. [verb] Present participle of muse
2. [adjective] Absorbed in thought; contemplative
3. [noun] Thought, meditation, contemplation
4. [noun] A calm, lengthy, intent consideration.
5. [adjective] Deeply or seriously thoughtful; 'Byron lives on not only in his poetry, but also in his creation of the 'Byronic hero' - the persona of a brooding melancholy young man';.