Source : Webster's Revised Unabridged Dictionary (1913)

Myrmecophyte \Myr"me*co*phyte`\, n. [Gr. my`rmhx, my`rmhkos, ant
   + fyto`n plant.] (Bot.)
   A plant that affords shelter and food to certain species of
   ants which live in symbiotic relations with it. Special
   adaptations for this purpose exist; thus, {Acacia
   spadicigera} has large hollows thorns, and species of
   {Cecropia} have stem cavities. -- {Myr`me*co*phyt"ic}, a.

Source : WordNet®

myrmecophyte
     n : plant that affords shelter or food to ants that live in
         symbiotic relations with it