Definition of avant-courier in English:
A person running ahead, especially a member of the advance guard of an army.
- General Platen's avant-courier now arrived with the intelligence of his approach.
- He had served as an artilleryman during the war of Independence, and retained enough of his old military habits to make a most invaluable avant-courier.
- Landseer, however, instead of following his avant-courier in an hour, arrived in a few minutes after him.