elephant ear noun 11forms 1 noun11 •Any of several plants in tribe Colocasieae or Caladieae. •A taro plant, of genera Alocasia, Colocasia, or Xanthosoma. •Caladium. •Burdock (Arctium spp.). •Any bergenia, esp. of species Bergenia crassifolia, •A funnel cake. •A flat, crisp, sugared pastry made of fried dough. •A palmier. •(slang) A section of aileron that protrudes beyond the wing.It did not have the “elephant ears” on the ailerons like the earlier Waco Model 9. — 1990 •(slang) A reinforcing disk on a missile. •Gynandrocarpa placenta formselephant ears