Device That Blocks Sound to the Auditory Canal
This page is the CodyCross answer for the clue below from Farm, Group 469, Puzzle 4 (Pest Management).
Question is: Device That Blocks Sound to the Auditory Canal
and the answer is: EARPLUG
Word Meaning:
EARPLUG — A piece of protective gear meant to be inserted in the ear canal to protect the wearer's hearing from loud noises or the intrusion of water.
Definitions from Wiktionary.