'Meconium' definitions:
Definition of 'meconium'
From: WordNet
noun
Thick dark green mucoid material that is the first feces of a newborn child
Definition of 'Meconium'
From: GCIDE
- Meconium \Me*co"ni*um\, n. [L., fr. Gr. ?, fr. ? poppy.] (Med.) (a) Opium. [Obs.] (b) The contents of the fetal intestine; hence, first excrement. [1913 Webster]