The First Metal __ Was Invented in 1874
This page is the CodyCross answer for the clue below from Circus, Group 100, Puzzle 1 (Knife Thrower).
Question is: The First Metal __ Was Invented in 1874
and the answer is: DETECTOR
Word Meaning:
DETECTOR — A device capable of registering a specific substance or physical phenomenon, and that optionally sounds an alarm or triggers a warning.
Definitions from Wiktionary.