What is caller?

More definitions of "caller":

• (noun): The person who convenes a meeting.
  Example: "Who is the caller of this meeting?"

• (noun): A social or business visitor.
  Synonyms: company

• (adj): Fresh.
  Example: "Caller fish"

• (noun): An investor who buys a call option.

• (noun): The bettor in a card game who matches the bet and calls for a show of hands.

• (noun): The person initiating a telephone call.
  Synonyms: caller-up, phoner, telephoner

• (adj): Providing coolness.
  Example: "A cooling breeze"; "'caller' is a Scottish term as in 'a caller breeze'"

• (noun): A person who announces the changes of steps during a dance.
  Example: "You need a fiddler and a caller for country dancing"
  Synonyms: caller-out