Source : Webster's Revised Unabridged Dictionary (1913)

Chicory \Chic"o*ry\, n. [F. chicor['e]e, earlier also
   cichor['e]e, L. cichorium, fr. Gr. ?, ?, Cf. {Succory}.]
   1. (Bot.) A branching perennial plant ({Cichorium Intybus})
      with bright blue flowers, growing wild in Europe, Asia,
      and America; also cultivated for its roots and as a salad
      plant; succory; wild endive. See {Endive}.

   2. The root, which is roasted for mixing with coffee.

Source : WordNet®

chicory
     n 1: the dried root of the chicory plant: used as a coffee
          substitute [syn: {chicory root}]
     2: perennial Old World herb having rayed flower heads with blue
        florets cultivated for its root and its heads of crisp
        edible leaves used in salads [syn: {succory}, {chicory
        plant}, {Cichorium intybus}]
     3: root of the chicory plant roasted and ground to substitute
        for or adulterate coffee [syn: {chicory root}]
     4: crisp spiky leaves with somewhat bitter taste [syn: {curly
        endive}]