yeast

Từ điển Oxford Advanced Learner 8th

yeast [yeast yeasts] BrE [jiːst] NAmE [jiːst] noun uncountable, countable
a ↑fungus used in making beer and wine, or to make bread rise
Derived Word: ↑yeasty

Word Origin:
Old English, of Germanic origin; related to Dutch gist and German Gischt ‘froth, yeast’, from an Indo-European root shared by Greek zein ‘to boil’.