Topic: HUMAN
| Date: | 1200-1300 |
| Language: | Old French |
| Origin: | esplen, from Latin splen, from Greek |
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spleen

1 [countable]HBH an organ near your stomach that controls the quality of your blood
2 [uncountable] formal anger, especially unreasonable or unfair anger :
Obviously you're annoyed, but that doesn't give you the right to vent your spleen on me (=get angry with me).
Obviously you're annoyed, but that doesn't give you the right to vent your spleen on me (=get angry with me).