capital letter

Noun

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

Related words

• Synonyms: 
  capital , uppercase , upper-case letter , majuscule
• Antonyms: 
  small letter , lowercase , lower-case letter , minuscule