A tropical plant of the genus Spathiphyllum (family Araceae), several varieties of which are cultivated for their white spathes; also called peace plant.
Origin
1950s; earliest use found in The Times.
Definition of peace lily in US English:
peace lily
noun
A tropical plant of the genus Spathiphyllum (family Araceae), several varieties of which are cultivated for their white spathes; also called peace plant.