corselet

n. [ F., dim. of OF. cors. F. corps, body. See Corse. ] 1. Armor for the body, as, the body breastplate and backpiece taken together; -- also, used for the entire suit of the day, including breastplate and backpiece, tasset and headpiece. [ 1913 Webster ]

2. (Zool.) The thorax of an insect. [ 1913 Webster ]