Crossword Genius

Mock winter vehicle (6)

Ross

I believe the answer is:

sledge

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

This could be a double definition.

'mock' is the first definition.
Although both the answer and definition are verbs in their base form, I can't understand how one could define the other.

'winter vehicle' is the second definition.
(I've seen this in another clue)

Can you help me to learn more?

(Other definitions for sledge that I've seen before include "Try rattling opposing players" , "Vehicle for use in snow" , "In Canada train" , "Put cricketer off" , "heavy tool" .)

I've seen this clue in the Sydney Morning Herald.
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