From Longman Dictionary of Contemporary Englishblock lettersˌblock ˈletters noun [plural] SLAWRITEblock capitals
Examples from the Corpus
block letters• This is what it says, high above a doorway, in big block letters, at Pasadena's Clearwater Seafood.• The lines, mainly in block letters, wander and slant across the page.• The files contained a single document, his lob application, filled out in block letters and unsigned.• The surname should be written or typed in block letters followed by the title of the guest, and then the initials. 