1) British student magazine 
Twikker was the Rag Mag of Sheffield University Rag. The name is a corruption of The Wicker, a well-known street in Sheffield, South Yorkshire, England crossed at one end by the Wicker Arches (a railway viaduct). (`Twikker` is also the name of a rock climb in Derbyshire, first climbed (and therefore named) by a member of the Sheffield University.....