1. as a lit. or fig. piece of equipment.
(a) [mid-19C+] any object or device.
(b) [late 19C–1920s] (UK Und.) a burglar’s or safe-breaker’s equipment.
(c) [1940s–50s] (UK prison) whatever is needed for attempting a given escape.
(d) [1970s] (US Und.) a weapon.
2. of a collection of individuals.
(a) [mid-19C+] a travelling party or a party in charge of herds of cattle.
(b) [late 19C+] any group of people.
(c) [late 19C+] a criminal organization, a gang.
(d) [late 19C+] an organization, a business; a sports team.
(e) [20C+] a collection of inanimate objects or possessions.
(f) [1920s+] (US Und.) constr. as The Outfit, a specific criminal organization, usu. the US Mafia or Italian gangs in US prisons; also used as adj.
3. in drug uses.
(a) [late 19C+] equipment for the preparation and smoking of opium.
(b) [1920s+] (also bang outfit, fit) the equipment (needle, spoon, cotton etc) used for narcotic injection.
[1910s+] the lot, everything.