late 14c.; see capital (adj.). So called because it is at the "head" of a sentence or word.
One of the two kinds of letters. Capital letters, also called upper-case letters, are larger than, and often formed differently from, lower-case letters. Capital letters are used at the beginning of a sentence or a proper name and may be used to show respect. Some examples are: “The dog barked,” Daniel, the Lord, and Queen Elizabeth.