Meaning of UPPER-CASE LETTER

WordNet Dictionary
	Definition:		[n]  one of the large alphabetic characters used as the first letter in proper names and sometimes for emphasis; (printers once kept type for capitals and small letters in separate cases; capitals were kept in the upper half of the type case and so became known as upper-case letters)
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	Synonyms:		capital, upper case
	Antonyms:		lower case, lower-case letter, small letter
	See Also:		character, grapheme, graphic symbol, small cap, small capital