1425-75; < Frenchcuirasse < Late Latincoriācea, noun use of feminine of coriāceus (adj.) leather, equivalent to Latincori(um) leather + -āceus-aceous; replacing late Middle Englishcuras < Middle Frenchcurasse, variant of cuirasse
"armor for the chest and back," mid-15c., from Middle French cuirasse (15c.), from Late Latin coriacea vestis "garment of leather," from Latin corium "leather, hide" (see corium). Cognate with Italian corazza, Spanish coraza, Portuguese couraça.