Little support for a sportsman who's slipping (4)

I believe the answer is:

luge

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

'little support' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for luge that I've seen before include "Small sledge for one" , "Glue for a one-man sledge" , "Glue (anag) - racing toboggan" , "Racing sled for one or two people" , "Form of toboggan" .)

I've seen this clue in the Evening Standard.

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