Meaning

noun a small crown; usually indicates a high rank but below that of sovereign

noun margin between the skin of the pastern and the horn of the hoof

originFrom Middle French couronnette, from Old French coronete, diminutive of corone (“crown”), from Latin corona, from Ancient Greek κορώνη (korṓnē, “a type of sea-bird, perhaps shearwater; a crow; anything curved or hooked (like a door handle or the tip of a bow); a type of crown”).

Etymology from Wiktionary, CC BY-SA 3.0