gastric juice

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The colorless, watery, acidic digestive fluid that is secreted by various glands in the mucous membrane of the stomach and consists chiefly of hydrochloric acid, pepsin, rennin, and mucin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun biology A secretion of the gastric glands that includes hydrochloric acid, pepsinogen and mucus.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun digestive secretions of the stomach glands consisting chiefly of hydrochloric acid and mucin and the enzymes pepsin and rennin and lipase