meconium

Meaning

Noun

• A dark green mass, the contents of the fetal intestines during the later stages of mammalian gestation, that forms the first feces of the newborn.
• Opium.

Origin

• From Latin mēcōnium ("opium; excrement of a newborn child"), from Ancient Greek μηκώνιον ("poppy-juice, opium"), from μήκων.