| baleen | (noun) a horny material from the upper jaws of certain whales; used as the ribs of fans or as stays in corsets | Synonyms: whalebone |
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| colleen | (noun) an Irish girl | - |
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| paleencephalon | (noun) the more primitive parts of the brain phylogenetically; most structures other than the cerebral cortex | Synonyms: palaeencephalon, paleoencephalon |
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| spleen | (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 |
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| (noun) a feeling of resentful anger | Synonyms: irascibility, quick temper, short temper |
| spleenwort | (noun) any of various chiefly rock-inhabiting ferns of the genus Asplenium | - |
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