air marshal

Definition of Air Marshal in English :

1. air marshal, sky marshal

a person trained by the government in hijacking and terrorist tactics who (for security reasons) is a passenger aboard an airline flight

WordNet Lexical Database for English. Princeton University. 2010.

Air Marshal

noun

1.

a senior Royal Air Force officer of equivalent rank to a vice admiral in the Royal Navy

2.

a Royal Australian Air Force officer of the highest rank

3.

a Royal New Zealand Air Force officer of the highest rank when chief of defence forces

4.

a person employed to travel as an armed guard on commercial flights to protect against hijacking

n.

A security officer who travels undercover on a commercial airliner to prevent hijacking or terrorist activity.