brooding (Adjective) — Deeply or seriously thoughtful. ex. "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"
brooding (Noun) — Sitting on eggs so as to hatch them by the warmth of the body.
brooding (Noun) — Persistent morbid meditation on a problem.
brooding (Verb) — Think moodily or anxiously about something.
brooding (Verb) — Hang over, as of something threatening, dark, or menacing. ex. "The terrible vision brooded over her all day long"
brooding (Verb) — Be in a huff and display one's displeasure. ex. "She is brooding because she didn't get what she wanted"
brooding (Verb) — Be in a huff; be silent or sullen.
brooding (Verb) — Sit on (eggs). ex. "Birds brood"