Ding Dong, Ring It When Going to a Friend’s House
Puzzle 8 of Countdown to 2020 Piece of Cake Pack
Question
Ding Dong, Ring It When Going to a Friend’s House
Answer
DOORBELL
Word Meaning:
DOORBELL — A bell, buzzer, or chime device mounted on or adjacent to a door's exterior, meant to be rung by a visitor to announce one's presence.
Definitions from Wiktionary.