What is the meaning of Whey?

The liquid remaining after milk has been curdled and strained in the process of making cheese.

A shout for attention

A shout of enthusiasm or delight

Shouted when someone drops a glass or other crockery, especially in a pub.

The leftovers from milk curdled during cheesemaking; whey.

The result of strained almond milk.

Source: wiktionary.org