Definition of spleen

• n. - 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.
• n. - Anger; latent spite; ill humor; malice; as, to vent one's spleen.
• n. - A fit of anger; choler.
• n. - A sudden motion or action; a fit; a freak; a whim.
• n. - Melancholy; hypochondriacal affections.
• n. - A fit of immoderate laughter or merriment.
• v. t. - To dislke.