What is etym: [Cf. fraco of wool or silk, L. floccus, E. frock.] An oblong cloak button, covered with netted thread, and fastening into a loop instead of a button hole called?

frog — Etym: [Cf. fraco of wool or silk, L. floccus, E. frock.] An oblong cloak button, covered with netted thread, and fastening into a loop instead of a button hole. (Webster's 1913.)