sitting on eggs so as to hatch them by the warmth of the body

[ Syn: incubation ]

persistent morbid meditation on a problem

[ Syn: pensiveness ]

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;

[ Syn: broody , contemplative , meditative , musing , pensive , pondering , reflective , ruminative ]