The Collaborative International Dictionary of English v.0.48:
Canard \Ca*nard"\, n. [F., properly, a duck.] An extravagant or absurd report or story; a fabricated sensational report or statement; esp. one set afloat in the newspapers to hoax the public. [1913 Webster]WordNet (r) 3.0 (2006):
canard n 1: a deliberately misleading fabrication