0 a style of writing in which each letter of a word is written separately and clearly using the capital letters of the alphabet:
The letter was hand-written in all block letters with a return address of Denver.
I unwrap the paper and look at a 100ml bottle marked POISON in block letters.
He drew the wrinkled piece of paper from his pocket and stared at the childishly formed block letters.
It was the first single panel strip to appear in the panel format, and the first to use block letters for its dialogue.
Charles also invented lighted steps as a feature of shows, and was the first to implement large block letters which actors could sit on as a part of the set.
Arrangements have been made for the telephone numbers of all cab-rank telephones to be displayed in white block letters and figures on a black background.
It says in block letters, underlined in red—it is my underlining and is not on the normal form—that in no circumstances should the charge be paid to a parking attendant.