The smaller of two channels in a river that diverge to form an island. / A secondary channel of activity, typically in parallel with primary channels and somewhat independent of them.

Alternative spelling of backchannel

To watch a series of television stations for a short time each, by repeated use of a remote control

A specific radio frequency or band of frequencies used for transmitting television. / A station or broadcaster using the band.

(rail transport) The man-made tunnel under the English Channel joining England and France.

(biochemistry) A protein complex or single protein which penetrates a cell membrane and catalyzes the passage of specific ions through that membrane.

The arm of the Atlantic Ocean that separates the British Isles from northern France, and joins the North Sea to the Atlantic Ocean.

a television channel dedicated to news, often operating continuously

(Britain, informal) that travels across the English Channel

An inlet of the Atlantic Ocean between South Wales and England; an extension of the estuary of the River Severn