ESPIONAGE

espionage. Espionage, n. the art or practice of spies

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Es″pi‐o‐nage (?; 277), n. [[F. espionnage, fr. espionner to spy, fr. espion spy, OF. espie. See Espy.]] The practice or employment of spies; the practice of watching the words and conduct of others, to make discoveries, as spies or secret emissaries; secret watching.