Tell-tale
TELL'-TALE, adjective Telling tales; babbling.
TELL'-TALE, noun [tell and tale.] One who officiously communicates information of the private concerns of individuals; one who tells that which prudence should suppress, and which if told, often does mischief among neighbors.
1. A movable piece of ivory or lead on a chamber organ, that gives notice when the wind is exhausted.
2. In seamanship, a small piece of wood, traversing in a groove across the front of the poop deck, and which, by communicating with a small barrel on the axis of the steering wheel, indicates the situation of the helm.