Wa"ter gall` (?).

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 water galls, in her dim element, Foretell new storms to those already spent. Shak.

False good news are [is] always produced by true good, like the water gall by the rainbow. Walpole.

© Webster 1913.