1. A herald, in the Iliad, who had a very loud voice; hence, any person having a powerful voice.
2. (Science: zoology) Any species of ciliated infusoria belonging to the genus Stentor and allied genera, common in fresh water. The stentors have a bell-shaped, or cornucopia-like, body with a circle of cilia around the spiral terminal disk.
3. (Science: zoology) A howling monkey, or howler.
Origin: L. Stentor, Gr.