What is the definition for the word adjective?

n. (Abbr. a. or adj.)

1. The part of speech that modifies a noun or other substantive by limiting, qualifying, or specifying and distinguished in English morphologically by one of several suffixes, such as -able, -ous, -er, and -est, or syntactically by position directly preceding a noun or nominal phrase.
2. Any of the Words belonging to this part of speech, such as white in the phrase a white house.

Taken from WikiAnswers: adjective