Chiton

1. n. One of a group of gastropod mollusks, with a shell composed of eight movable dorsal plates. See Polyplacophora.
2. n. An under garment among the ancient Greeks, nearly representing the modern shirt.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.