1947, American English, "officer in charge," from Japanese hancho "group leader," from han "corps, squad" + cho "head, chief." Picked up by U.S. servicemen in Japan and Korea, 1947-1953.
The person in charge; chief; big enchilada, boss: better known as the honcho of Scientific Anglers, Inc (1947+)
verb: honcho a staff
[fr Japanese hancho, ''squad leader''; han, ''small group,'' and cho, ''leader'']