a relative clause that modifies a noun or pronoun, as the clause that I told you about in This is the book that I told you about and who saw us in It was she who saw us.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use adjective clause in a sentence
A dependent clause in a complex sentence may also be an adjective clause.
An adjective clause may modify any noun or any word used as a noun in the sentence.
Whom I wanted is an adjective clause modifying the noun man.
A clause used to describe and modify a noun is an adjective clause.
An adjective clause may be introduced by the relative pronouns, who, which or that.