telltale

• someone who gossips indiscreetly
• disclosing unintentionally
• Telling tales
• One who officiously communicates information of the private concerns of others
• A movable piece of ivory, lead, or other material, connected with the bellows of an organ, that gives notice, by its position, when the wind is exhausted
• A mechanical attachment to the steering wheel, which, in the absence of a tiller, shows the position of the helm
• A compass in the cabin of a vessel, usually placed where the captain can see it at all hours, and thus inform himself of the vessel´s course
• A machine or contrivance for indicating or recording something, particularly for keeping a check upon employees, as factory hands, watchmen, drivers, check takers, and the like, by revealing to their employers what they have done or omitted
• The tattler

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