Main Entry: opi·um

Pronunciation: \ˈō-pē-əm\

Function: noun

Etymology: Middle English, from Latin, from Greek opion, from diminutive of opos sap

Date: 14th century

1 : a bitter brownish addictive narcotic drug that consists of the dried latex obtained from immature seed capsules of the opium poppy
2 : something having an effect like that of opium