Source : Webster's Revised Unabridged Dictionary (1913)

Chard \Chard\, n. [Cf. F. carde esclent thistle.]
   1. The tender leaves or leafstalks of the artichoke, white
      beet, etc., blanched for table use.

   2. A variety of the white beet, which produces large,
      succulent leaves and leafstalks.

Source : WordNet®

chard
     n 1: beet lacking swollen root; grown as a vegetable for its
          edible leaves and stalks [syn: {Swiss chard}, {spinach
          beet}, {leaf beet}, {chard plant}, {Beta vulgaris cicla}]
     2: long succulent whitish stalks with large green leaves [syn:
        {Swiss chard}, {spinach beet}, {leaf beet}]