Lock on a Door That Doesn't Use a Spring
This page is the CodyCross answer for the clue below from New York, New York!, Group 374, Puzzle 1 (Laguardia Airport).
Question is: Lock on a Door That Doesn't Use a Spring
and the answer is: DEADBOLT
Word Meaning:
DEAD BOLT — Alternative form of deadbolt.
Definitions from Wiktionary.