Merriam-Webster's Collegiate® Dictionary, 11th Edition
SUCH
I. adjective see: so Date: before 12th century
1. of a kind or character to be indicated or suggested , having a quality to a degree to be indicated , of the character, quality, or extent previously indicated or implied , of so extreme a degree or quality , of the same class, type, or sort , not specified,
II. pro noun Date: before 12th century such a person or thing, someone or something stated, implied, or exemplified , someone or something similar ; similar persons or things ,
Usage: For reasons that are hard to understand, commentators on usage disapprove of such used as a pro noun . Dictionaries, however, recognize it as standard; all of the citations upon which our definitions of this word are based are clearly standard.
III. adverb Date: before 12th century
1. to such a degree ; so , very , especially , in such a way