From Longman Business Dictionarybellwetherbell‧weth‧er /ˈbelˌweDə-ər/ noun [countable] FINANCE a type of stock, share etc whose price is thought to show the probable future direction of the market as a wholeHe periodically checks on a few properties chosen as bellwethers to see if prices are rising or falling.With 40% of sales of pharmaceuticals, the company is the bellwether stock of the sector.
