Slip across the road (4)

I believe the answer is:

skid

I'm a little stuck... Click here to teach me more about this clue!

This clue might be a double definition.

'slip across' is the first definition.
'skid' can be an answer for 'slip' (synonyms). I'm unsure of the 'across' bit.

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

'the' acts as a link.

Can you help me to learn more?

(Other definitions for skid that I've seen before include "Lose lateral control" , "What car may do on ice - be careful" , "Slide (on slippery ground)" , "Runner" , "Slip, slide" .)

I've seen this clue in the Evening Standard and The Globe and Mail.

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