noun
1.
an officer of very high rank in the British air force :
Air Marshal Gordon Black
2.
an armed guard who is employed by an airline to travel on a plane with the passengers in order to protect the plane from terrorists
noun
1.
an officer of very high rank in the British air force :
Air Marshal Gordon Black
2.
an armed guard who is employed by an airline to travel on a plane with the passengers in order to protect the plane from terrorists
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005