1. (noun) a main organ that is situated inside the body

• internal organ

1. (noun) a main organ that is situated inside the body

• bowel
• gut
• intestine
• breadbasket
• stomach
• tum
• tummy
• entrails
• innards
• viscera
• excretory organ
• urinary organ
• heart
• pump
• ticker
• hindgut
• liver
• respiratory organ

1. (noun) a main organ that is situated inside the body

• organ