Small child is without traction (6)
I believe the answer is:
skiddy
'without traction' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'small child' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'child' becomes 'kiddy' (kiddy is a kind of child).
's'+'kiddy'='SKIDDY'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for skiddy that I've seen before include "having little traction" , "Slippery" .)