spleen

/splin/

/splin/

Other forms: spleens

The spleen is an organ that's about the size of a fist, located on the left side, just below the ribcage. Don't let its small size fool you. This little organ is very important in helping the body fight infection.

The spleen is responsible for removing old red blood cells and producing and storing a reserve of blood in case the body needs it. It's a little organ, measuring little more than four inches in length. The term "vent your spleen" is one you might see used. It means to vent your anger, as spleen is another word for bad temper or spite.

Definitions of spleen

1. noun

   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
   synonyms: lien

   type of:

   lymphatic tissue, lymphoid tissue

   tissue making up the lymphatic system
2. noun

   a feeling of resentful anger
   synonyms: irascibility, quick temper, short temper

   type of:

   bad temper, ill temper

   a persisting angry mood