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"

1. of or relating to a style of writing characterized by somewhat rounded capital letters; 4th to 8th centuries

2. uppercase;

"capital A"

"great A"

"many medieval manuscripts are in majuscule script"