Children cycling slip sideways on road (4)

I believe the answer is:

skid

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'road' is the definition.
(skid road is a kind of road)

I don't understand how the remainder of the clue works.

(Other definitions for skid that I've seen before include "Slide sideways" , "Slide fast" , "lose control momentarily" , "Slide uncontrollably" , "Uncontrolled slide" .)

I've seen this clue in The Times.

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