chiton
noun
chi·ton ˈkī-tᵊn 
ˈkī-ˌtän
1
: any of a class (Polyplacophora) of elongated bilaterally symmetrical marine mollusks with a dorsal shell of calcareous plates
2
[Greek chitōn] : the basic garment of ancient Greece worn usually knee-length by men and full-length by women
Example Sentences
Recent Examples on the Web Even the diaphanous chiton-like dresses that Maria Grazia does nearly every season feel like a special, possibly sacred code of femininity. 
Rachel Tashjian, Harper's BAZAAR, 6 July 2022 The mineral is believed to toughen the teeth of the sometimes 14-inch chiton without adding extra weight, due to its high water content and low density, Joster said. Asha C. Gilbert, USA TODAY, 1 June 2021 Her chiton, fastened at one shoulder, falls, exposing both breasts. National Geographic, 18 June 2020 At a dinner last month, Mr. Lai served small bowls filled with citrus broth and those whelks, periwinkles and chitons tucked into a tangle of seaweed invasive to the Everglades. Florence Fabricant, New York Times, 15 Apr. 2016 Similarly, fleeing limpets and chitons navigated stony surfaces with the fascinating rapidity of ice forming across a winter pond. Clark Fair, Alaska Dispatch News, 8 July 2017
Rachel Tashjian, Harper's BAZAAR, 6 July 2022 The mineral is believed to toughen the teeth of the sometimes 14-inch chiton without adding extra weight, due to its high water content and low density, Joster said. Asha C. Gilbert, USA TODAY, 1 June 2021 Her chiton, fastened at one shoulder, falls, exposing both breasts. National Geographic, 18 June 2020 At a dinner last month, Mr. Lai served small bowls filled with citrus broth and those whelks, periwinkles and chitons tucked into a tangle of seaweed invasive to the Everglades. Florence Fabricant, New York Times, 15 Apr. 2016 Similarly, fleeing limpets and chitons navigated stony surfaces with the fascinating rapidity of ice forming across a winter pond. Clark Fair, Alaska Dispatch News, 8 July 2017 Word History
Etymology
New Latin, genus name, from Greek chitōn tunic, of Semitic origin; akin to Hebrew kuttōneth tunic
First Known Use
1816, in the meaning defined at sense 1