upper-case letter meaning and definition

UPPER-CASE LETTER noun

Definition of upper-case letter (noun)

1. one of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis
   • "printers once kept the type for capitals and for small letters in separate cases; capitals were kept in the upper half of the type case and so became known as upper-case letters"
   • synonyms: capital, capital letter, majuscule, uppercase
   • antonym: lowercase