Yest. n.s. [ᵹꞅꞇ, Saxon.]
- The foam, spume, or flower of beer in fermentation; barm.
Yeast and outward means do fail,
And have no power to work on ale. Hudibras.
When drays bound high, they never cross behind,
Where bubbling yeast is blown by gusts of wind. Gay.
- The spume on a troubled sea.
Now the ship boring the moon with her main-mast, and anon swallow'd with yeast and froth, as you'd thrust a cork into a hogshead. Shakesp. Winter's Tale.