'mother-in-law's tongue' definitions:

Stemless plant having narrow rigid leaves often cultivated as a houseplant [syn: mother-in-law's tongue, snake plant, Sansevieria trifasciata]

An evergreen plant with large showy dark green leaves; contains a poison that swells the tongue and throat hence the name [syn: dumb cane, mother-in-law plant, mother-in- law's tongue, Dieffenbachia sequine]