Spleen

1. To dislke.
2. A sudden motion or action; a fit; a freak; a whim.
3. A fit of immoderate laughter or merriment.
4. A fit of anger; choler.
5. Anger; latent spite; ill humor; malice; as, to vent one's spleen.
6. Melancholy; hypochondriacal affections.
7. A peculiar glandlike but ductless organ found near the stomach or intestine of most vertebrates and connected with the vascular system; the milt. Its exact function in not known.