Webster's Revised Unabridged Dictionary · 1913

Caddis

Caddis , noun

[Old English caddas, Scot. caddis lint, caddes a kind of woolen cloth, compare Gael. cada, cadadh, a kind of cloth, cotton, fustian, Welsh cadas, French cadis.]

A kind of worsted lace or ribbon.
Caddises, cambrics, lawns. — Shakespeare