[ˈkɔlɚ]
Definition:
1. A social or business visitor.
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.
5. Someone who proclaims or summons in a loud voice.
6. The person who convenes a meeting.