Found 2 items, similar to meconium.
English → English (WordNet) Definition: meconium meconium n : thick dark green mucoid material that is the first feces of a newborn child
English → English (gcide) Definition: Meconium 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]