English to English

noun (n)

• one of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis(noun.communication)

  Example:
  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.
  

  Synonym:
  capital, capital letter, majuscule, uppercase
  Antonym:
  lower-case letter, lowercase, minuscule, small letter
  

  source: wordnet30