call waiting
noun
a telephone service feature whereby a person engaged in a telephone call is notified by a tone that a second call is being made to the same number, and is able to talk to either party while keeping the other on hold.
Compare
hold button.
Words nearby call waiting
call to mind,
call to order,
call to quarters,
call up,
call upon,
call waiting,
call-and-response,
call-board,
call-exner body,
call-in,
call-in pay