whey
US /weɪ/
UK /weɪ/

1.
ホエイ, 乳清
the watery part of milk that separates from the curds, especially in the process of making cheese
:
•
After making cheese, we were left with a large amount of whey.
チーズを作った後、大量のホエイが残った。
•
Whey protein is a popular supplement for athletes.
ホエイプロテインはアスリートに人気のサプリメントです。