только мн. yeast, barm, leaven ед. пивные дрожжи – barm, brewer's yeast ставить на дрожжах – to make with yeast, to leaven тесто на дрожжах – yeast dough, baker's dough как на дрожжах – (to grow) by leaps and bounds
мн. уст. yeast sg.
пивные ~ brewer`s yeast, barm