pager
1 of 2noun (1)
pag·er ˈpā-jər 
: one that pages
especially : a small radio receiver that beeps, vibrates, or flashes to alert the user to an incoming message which is usually displayed on a small screen
pager
2 of 2noun (2)
: one having or covering a specified number or kind of pages —used in combination
her essay was a 15-pager
Word History
First Known Use
Noun (1)
1870, in the meaning defined above
Noun (2)
1966, in the meaning defined above
Kids Definition
pager
noun
pag·er ˈpā-jər
: a small electronic device that beeps, vibrates, or flashes when it receives a signal