A sideways sliding of the tape layers' one over the other' such that the roll looks like a funnel or a telescope
The deviation from flat of a roll of tickets or magnetic tape, where the center hub is displaced from the roll
Transverse slipping of successive layers of a coil so that the edge of the coil is conical rather than flat
An occurance in a train crash where one coach rides-up over the buffers of another and the under frame intrudes into the body of the other coach This was a common feature af railway accidents until the introduction of "buck-eye" couplings