Crash Inflatable
Puzzle 8 of At the Ballet Hard Pack
Question is: Crash Inflatable
and the answer is: AIRBAG
Word Meaning:
AIRBAG — (automotive) A protective system in automobiles in which when a crash occurs, a bag containing nitrogen, formed by the explosive decomposition of sodium azide, quickly inflates in front of the driver or passenger, preventing injury to the head. Side air bags, including the back seat passengers, also prevent injury.
Definitions from Wiktionary.