Definition of mother-in-law's tongue in English:

mother-in-law's tongue

Syllabification: moth·er-in-law's tongue


  • A West African plant of the agave family, having long slender leaves with yellow marginal stripes, often grown as a houseplant.
    • Sansevieria trifasciata, family Agavaceae
    More example sentences
    • For instance they won't eat anything in the aloe family or leathery leafed plants such as mother-in-law's tongue.
    • If the bathroom is cold for most of the day, choose sansevierias (mother-in-law's tongue) - which will also survive in a poorly lit bathroom - or Nepenthes alata, a carnivorous plant with unusual hanging red traps.
    • All over the Caribbean, it is known as ‘mother-in-law's tongue’.

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