Noun
A person carrying a standard or flag, usually at sporting events and parades, previously on the battlefield.
(business) A transportation company, such as a shipping or airline company, that is registered in a given state
(politics) A strong supporter of a cause, or perhaps the strongest and most visible supporter of said cause.
"Bill was the flag carrier of the movement to improve inner city education."
A national airline (typically having the flag, or other national insignia, on the tail)
(military, nautical) An aircraft carrier serving as a flagship
Source: en.wiktionary.orgFlag carrier Philippine Airlines and Cebu Pacific said they are processing requests for refund. Source: Internet
Worker used the National Flag Carrier accounts to purchase supplies for his private company! Source: Internet