1.a social or business visitor;
the room was a mess because he hadn't expected company
2.an investor who buys a call option
3.the bettor in a card game who matches the bet and calls for a show of hands
4.a person who announces the changes of steps during a dance;
you need a fiddler and a caller for country dancing
5.someone who proclaims or summons in a loud voice;
the callers were mothers summoning their children home for dinner
6.the person who convenes a meeting;
who is the caller of this meeting?
7.the person initiating a telephone call;
there were so many callers that he finally disconnected the telephone
8.providing coolness;
a cooling breeze
9.fresh;
caller fish