Definify.com
Webster 1913 Edition
Water gall
Wa′ter gallˊ
.1.
A cavity made in the earth by a torrent of water; a washout.
2.
A watery appearance in the sky, accompanying the rainbow; a secondary or broken rainbow.
These
Foretell new storms to those already spent.
water galls
, in her dim element,Foretell new storms to those already spent.
Shakespeare
False good news are [is] always produced by true good, like the
water gall
by the rainbow. Walpole.