<p><strong>Noun</strong></p><ul><li>a device that connects into a telephone circuit and transmits a periodic signal as an indication that the conversation over the circuit is being recorded.</li><li>a similar device attached to a free-ranging animal as an aid to learning its habits; biotelemeter.</li><li>Also called pager.</li><li>a pocket-size electronic device whose signal notifies a person of an important message, sometimes displaying the telephone number to be called.</li></ul>