Meaning:
Something that shows what the future trends and developments will be like
Usage:
- She is a bellwether of fashion trends and new fabrics
- Her report on Social Media trends turned out to be a bellwether new digital campaigns
- Paris is a bellwether to haute couture and perfumes
Etymology:
Middle English bellewether, belleweder “castrated ram with a bell around his neck followed by the other sheep in a flock, leader,” from belle BELL entry 1 + wether, weder WETHER