Meaning

noun a speaker with an unusually loud voice

noun the mythical Greek warrior with an unusually loud voice who died after losing a shouting contest with Hermes

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

originBorrowed from Latin Stentōr, from Ancient Greek Στέντωρ (Sténtōr), the name of a herald in the Iliad who had a loud voice.

Etymology from Wiktionary, CC BY-SA 3.0