Internal organ definitions

Internal organ

1) Heart
Found on https://www.crosswordclues.com/clue/internal-organ

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internal organ

[n] - a main organ that is situated inside the body
Found on http://www.webdictionary.co.uk/definition.php?query=internal%20organ

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internal organ

parts of a body’s inside - intestines, stomach, etc
Found on https://sciencetrek.org/sciencetrek/topics/oceans/glossary.cfm

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internal organ

viscus noun a main organ that is situated inside the body
Found on https://www.encyclo.co.uk/local/20974

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