From Longman Dictionary of Contemporary Englishsarniesar‧nie /ˈsɑːni $ ˈsɑːr-/ noun [countable] British English informal x-refa sandwich
Examples from the Corpus
sarnie• But those innocent-looking sarnies could be riddled with bacteria, such as listeria, Salmonella and Staphylococcus.Origin sarnie (1900-2000) Probably from sandwich 