Source : Webster's Revised Unabridged Dictionary (1913)

Cantilever \Can"ti*lev`er\, n.
   Same as {Cantalever}.

Source : WordNet®

cantilever
     n : projecting horizontal beam fixed at one end only
     v 1: project as a cantilever
     2: construct with girders and beams such that only one end is
        fixed; "Frank Lloyd Wright liked to cantilever his
        buildings"