Source : WordNet®

mother-in-law's tongue
     n 1: stemless plant having narrow rigid leaves often cultivated
          as a houseplant [syn: {snake plant}, {Sansevieria
          trifasciata}]
     2: a 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}, {Dieffenbachia
        sequine}]