stentor

1. Any of several trumpet-shaped, ciliate protozoans of the genus Stentor, living in dark freshwater pools and feeding chiefly on smaller microorganisms.
   喇叭（纤）虫：任一种喇叭（纤）虫属的喇叭状的有纤毛原生动物，生活于阴暗的淡水池中，主要以较小的微生物为食。
2. There is a Stentor at the other end of the telephone line.
   给你打电话的对方是个大嗓门。

noun

1. any of several trumpet-shaped ciliate protozoans that are members of the genus Stentor

2. a speaker with an unusually loud voice