  A revised and complete list of the electroweak chiral lagrangian operators up
to dimension-four is provided. The connection of these operators to the $S$,
$T$ and $U$ parameters and the parameters describing the triple gauge boson
vertices $WW\gamma$ and $WWZ$ is made, and the size of these parameters from
new heavy physics is estimated using a one flavor-doublet model of heavy
fermions. The coefficients of the chiral lagrangian operators are also computed
in this model.
