ˌmortal ˈsin BrE AmE noun [uncountable and countable]
something that you do that is so bad, according to the Roman Catholic Church, that your soul will be punished for ever after death unless you ask to be forgiven
ˌmortal ˈsin BrE AmE noun [uncountable and countable]
something that you do that is so bad, according to the Roman Catholic Church, that your soul will be punished for ever after death unless you ask to be forgiven
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012