coquillage

[ koh-ki-lahzh; French kaw-kee-yahzh ]
/ ˌkoʊ kɪˈlɑʒ; French kɔ kiˈyɑʒ /

noun

an ornamental shell motif.

Origin of coquillage

1850–55; < French: a shellfish. See coquille, -age