noun, feminine/kɔ.kij/plural: coquilles
shell; dish; scallop; typo, misprint; jockstrap, athletic protector; groin guard, box, cup (protection for the male genitals); vacuum mattress (for spinal immobilization)
Synonyms: bourdon, faute de frappe, mastic
From a combination of Vulgar Latin *conchilia (from Latin conchylium) with coccum.