caller

plural callers

1. communicationsThe person who makes a telephone call.

   ―I’ve got someone on the line. ―Who’s the caller?

   1 more example

   Thaler was arrested in Orono last May when a caller reported that the car she was driving had a shattered rear window and a blown-out tire.

   2023 February 16, WCCO Staff, “Julissa Thaler sentenced to life in prison for murdering 6-year-old son, Eli Hart”, in cbsnews.com

2. A visitor.

   a gentleman caller

3. bingoThe person who stands at the front of the hall and announces the numbers.
4. computingA function that calls another (the callee).

   If the called function throws an exception, the caller should be prepared to handle the error.

5. A whistle or similar item used to call foxes.
6. danceThe person who directs dancers in certain dances, such as American line dances and square dances.