Found 2 items, similar to bellwether.
English → English (WordNet) Definition: bellwether bellwether n 1: someone who assumes leadership of a movement or activity 2: sheep that leads the herd often wearing a bell
English → English (gcide) Definition: Bellwether Bellwether \Bell"weth`er\, n. 1. A wether, or sheep, which leads the flock, with a bell on his neck. [1913 Webster] 2. Hence: A leader. [Contemptuous] --Swift. [1913 Webster]