BLT /ˌbiː.ɛlˈtiː/ noun[before a noun]3 •A food, usually a sandwich, made with these main ingredients.I wish I could make everyone a BLT. That would be the end of the golden arches, I'm sure of it. There are times when the BLT just tastes right, primal and true, the best thing you could ever eat. — 2010 •Initialism of bacon, lettuce and tomato.When another summer tomato sandwich just won’t do, try this BLT pasta instead. — 2018 •Initialism of ballistic lunar transfer. formsBLTs