\Can"ta*lev`er\, n. [Cant an external angle + lever a
supporter of the roof timber of a house.] [Written also
{cantaliver} and {cantilever}.]
1. (Arch.) A bracket to support a balcony, a cornice, or the
   like.
2. (Engin.) A projecting beam, truss, or bridge unsupported
   at the outer end; one which overhangs.
{Cantalever bridge}, a bridge in which the principle of the
   cantalever is applied. It is usually a trussed bridge,
   composed of two portions reaching out from opposite banks,
   and supported near the middle of their own length on piers
   which they overhang, thus forming cantalevers which meet
   over the space to be spanned or sustain a third portion,
   to complete the connection.