capital letter

Definitions of capital letter
1

n one of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis

Synonyms:
capital, majuscule, upper-case letter, uppercase
Antonyms:
lower-case letter, lowercase, minuscule, small letter
the characters that were once kept in bottom half of a compositor's type case
Types:
small cap, small capital
a character having the form of an upper-case letter but the same height as lower-case letters
Type of:
character, grapheme, graphic symbol
a written symbol that is used to represent speech