The term 'cartoon beeper' refers to the iconic character Road Runner from the Looney Tunes cartoons. Road Runner is a fast-running bird that is constantly chased by the coyote Wile E. Coyote. The Road Runner is known for its signature sound, which is made by a beep-beep noise. The other crossword solutions for the term 'cartoon beeper' are 'PAGES' (5 letters), 'PAGE' (4 letters), 'HORN' (4 letters), 'PAGED' (5 letters), and 'PAGER' (5 letters). All of these words refer to the beeping sound that the Road Runner makes, with 'PAGES' and 'PAGED' referring to the sound being repeated multiple times. The word 'PAGE' and 'PAGER' refer to the device used to make the sound, which is similar to a telephone PAGER. Finally, the word 'HORN' refers to the sound itself.