What is "water brash"

Brash \Brash\, n. [See Brash brittle.]

1. A rash or eruption; a sudden or transient fit of sickness.

2. Refuse boughs of trees; also, the clippings of hedges. [Prov. Eng.]
   --Wright.

3. (Geol.) Broken and angular fragments of rocks underlying alluvial deposits.
   --Lyell.

4. Broken fragments of ice.
   --Kane.

   Water brash (Med.), an affection characterized by a spasmodic pain or hot sensation in the stomach with a rising of watery liquid into the mouth; pyrosis.

   Weaning brash (Med.), a severe form of diarrhea which sometimes attacks children just weaned.

Water brash \Wa"ter brash`\ (Med.) See under Brash.