harmonica bug

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. An [[electronic]] [[eavesdropping]] [[device]] ([[bug]]) that attaches to a [[landline]] [[telephone]] and is [[activate]]d or [[deactivate]]d by a specific [[tone]]. When activated, it [[prevent]]s the telephone from [[ring]]ing but activates its [[microphone]] to transmit to another telephone at a [[remote]] location.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.