OPERATE, OPERATING THEATRE, OPERATION
NOUNS
► BUTCHER SHOP an operating room; also, a hospital; often used disparagingly → 1918 Amer. sl., esp. military usage
► HORRENDOPLASTY a difficult operation, often lasting eight or nine hours → 1972 Amer. hospital usage
► OP an operation → 1925 sl.
► PICTURES an operating theatre → World War I military sl.
VERBS
► BUTCHER to operate on → 1966 US sl.
Lexicophilia 