spleen n
1. a large dark-red oval organ on the left side of the body between the stomach and the diaphragm; produces cells involved in immune responses [syn: lien]
2. a feeling of resentful anger [syn: irascibility, short temper, quick temper]

Spleen \Spleen\, v. t. To dislke. [Obs.] --Bp. Hacket.

Spleen \Spleen\, n. [L. splen, Gr. ???? the milt or spleen, affection of the spleen; cf. L. lien, plihan, pl[=i]han.]
1. (Anat.) 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.
2. Anger; latent spite; ill humor; malice; as, to vent one's spleen. In noble minds some dregs remain, Not yet purged off, of spleen and sour disdain. --Pope.
3. A fit of anger; choler. --Shak.
4. A sudden motion or action; a fit; a freak; a whim. [Obs. or R.] A thousand spleens bear her a thousand ways. --Shak.
5. Melancholy; hypochondriacal affections. Bodies changed to various forms by spleen. --Pope. There is a luxury in self-dispraise: And inward self-disparagement affords To meditative spleen a grateful feast. --Wordsworth.
6. A fit of immoderate laughter or merriment. [Obs.] Thy silly thought enforces my spleen. --Shak.

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The spleen (from Greek σπλήν - splēn

The spleen, in healthy adult humans, is approximately 11 centimetres (4.3 in) in length. It usually weighs between 150 grams (5.3 oz)

Like the thymus, the spleen possesses only efferent lymphatic vessels.

The spleen is part of the lymphatic system.

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  ( Ludwig-Maximilians-Universität München ) Infections can trigger hematopoiesis at sites outside the bone marrow -- in the liver, the spleen or the skin. Researchers of Ludwig-Maximilians-Universitaet in Munich now show that a specific type of immune cell facilitates such "extra medullary" formation of blood cells. Read more on this news related to 'Spleen'
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