a person or thing that signifies.
the configuration of sound elements or other linguistic symbols representing a word or other meaningful unit in a language.

Compare signified.

Origin of signifier

First recorded in 1525–35; signify + -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for signifier

Contemporary Examples of signifier

Word Origin and History for signifier

1530s, agent noun from signify. In U.S. black use by 1962.

Online Etymology Dictionary, © 2010 Douglas Harper