adjective: (Britain) Relating to the English Channel; to, from, or on the Continent; involving both Britain and the Continent, especially France
adjective: (chiefly Ireland, dated in Britain) Relating to the body of water between the islands of Great Britain and Ireland (the Irish Sea, Saint George's Channel, and the North Channel); to, from, or in the other of the two islands
adjective: (UK) Usually relating to anything that takes place across the English Channel, as opposed to other channels.