Protective Sac for Pupa
This page is the CodyCross answer for the clue below from The 70's, Group 332, Puzzle 5 (Johnny Carson).
Question is: Protective Sac for Pupa
and the answer is: COCOON
Word Meaning:
COCOON — The silky case spun by the larvae of some insects in which they metamorphose, protecting the pupa within.
Definitions from Wiktionary.