1997 Comedy With Robin Williams, Green Rubber
Puzzle 15 of Safety First Hard Pack
Question is: 1997 Comedy With Robin Williams, Green Rubber
and the answer is: FLUBBER
Word Meaning:
FLUBBER — A rubbery polymer formed by cross-linking of polyvinyl alcohol with a boron compound, used as a plaything or to demonstrate physical properties.
Definitions from Wiktionary.