caller

(noun) a social or business visitor. Synonyms: company. Example: "The room was a mess because he hadn't expected company."

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

(noun) someone who proclaims or summons in a loud voice. Example: "The callers were mothers summoning their children home for dinner."

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

(noun) the person initiating a telephone call. Synonyms: caller-up, phoner, telephoner. Example: "There were so many callers that he finally disconnected the telephone."

(adj) providing coolness. Examples: "A cooling breeze." "`caller' is a scottish term as in `a caller breeze'."

(adj) fresh. Example: "Caller fish."