1st Earl of Stockton ( 1894–1986), British Conservative statesman, Prime Minister 1957–63; full name Maurice Harold Macmillan. His term of office saw the signing of the Test-Ban Treaty (1963) with the US and the USSR. Macmillan resigned on grounds of ill health shortly after the scandal surrounding John Profumo.
Definition of Macmillan, Harold in:
- The US English dictionary