  We study the low energy dynamics of pions in a gravity dual of chiral
symmetry breaking. The string theory construction consists of a probe D7 brane
in the Constable Myers non-supersymmetric background, which has been shown to
describe chiral symmetry breaking in the pattern of QCD. We expand the D7
brane's Dirac Born Infeld action for fluctuations that correspond to the
Goldstone mode and show that they take the form of a non-linear chiral
lagrangian. We numerically compute the quark condensate, pion decay constant
and higher order Gasser Leutwyler coefficients. We find their form is
consistent with naive dimensional analysis estimates. We also explore the
gauging of the quark's chiral symmetries and the vector meson spectrum.
