411 REFERENCE · Wiktionary
Dictograph
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
en dictograph.
en 2021 (originally published 2017, adapted 2021) David Grann Killers of the Flower Moon: Adapted for Younger Readers 60 At the time, laws governing electronic surveillance were not well defined and the detectives installed a Dictograph—a primitive listening device that could be tucked in anything from a clock to a chandelier.