Definition of "focussed"

When first sighted on the curve, outside the focussed beam, the signal aspects were faint and difficult to identify in a confused background.

1961 February, “Talking of Trains: Collision at Newcastle”, in Trains Illustrated, page 76

Criticism focussed particularly on the services to and from Blackpool.

1964 November, “LMR under fire in the NW”, in Modern Railways, page 355