American Heritage® Dictionary of the English Language, Fourth
Edition - n. A dark green fecal material that accumulates in the
fetal intestines and is discharged at or near the time of birth.
Century Dictionary and Cyclopedia - n. Poppy-juice. - n. The
feces of a new-born infant. - n. In entomology, the feces of an
adult insect just transformed from the pupa. - n. medicine A
dark green mass, the contents of the fetal intestines during the
later stages of mammalian gestation, that forms the first faeces
of the newborn - n. obsolete opium GNU Webster's 1913 - n.
obsolete Opium. - n. The contents of the fetal intestine; hence,
first excrement. - n. thick dark green mucoid material that is
the first feces of a newborn child - From Latin mēcōnium
("opium; excrement of a newborn child"), from Ancient Greek
μηκώνιον ("poppy-juice, opium"), from μήκων ("poppy").
(Wiktionary) - Latin mēcōnium, poppy juice, from Greek mēkōnion,
from mēkōn, poppy. (American Heritage® Dictionary of the English
Language, Fourth Edition) “