/ Dictionary / Index S sender: Meaning and Definition of Find definitions for: send•er Pronunciation: (sen'dur), [key] — n. a person or thing that sends. a transmitter of electric pulses, as in telegraphy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sender (Thesaurus) sendee Sendero Luminoso* Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language