also: むらきも
noun
Archaic or poetic word for the internal organs, especially the liver and surrounding viscera. In modern Japanese, 内臓 is the standard term. むらぎも is now mainly encountered in classical literature or as a makurakotoba (pillow word) in waka poetry.
古事記には「むらぎも」という言葉が内臓を指して使われている。
In the Kojiki, the word 'muragimo' is used to refer to the internal organs.
「むらぎも」は和歌で枕詞としても用いられる。
'Muragimo' is also used as a pillow word in waka poetry.
The exact derivation is uncertain. The first element むら may be related to 群 (cluster, group), and きも means liver, suggesting a collective term for the viscera. The reading むらぎも is older; むらきも is a later variant.