Word for today is
- a person or thing that shows the existence or direction of a trend
- a wether or other male sheep that leads the flock, usually bearing a bell.
- a person or thing that assumes the leadership or forefront, as of profession or industry.
- a person who leads a mob, mutiny, conspiracy, or the like, ringleader.
The word was derived from “wether” meaning ” a castrated male sheep”.