BUTTERMILK
Meaning of BUTTERMILK in English
but ‧ ter ‧ milk /ˈbʌtəˌmɪlk $ -ər-/ BrE AmE noun [uncountable]
the liquid that remains after butter has been made
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012