caddis

/K AE1 D IH0 S/
noun
  1. 1

    The larva of a caddis fly. They generally live in cylindrical cases, open at each end, and covered externally with debris.

  2. 2

    A rough woolen cloth; caddice.

  3. 3

    A kind of worsted lace or ribbon.

Source: https://en.wiktionary.org/wiki/caddis