Moves higher, having a hundred legs (6)
I believe the answer is:
climbs
'moves' is the definition.
(climbing is a kind of moving)
'higher having a hundred legs' is the wordplay.
I cannot really understand how this works, but
'hundred' could be 'c' (Roman numeral) and 'c' is located in the answer.
The remaining letters 'limbs' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for climbs that I've seen before include "Scales" , "Ascends, mounts" , "Moves upward gradually" , "Moves upward slowly" , "Goes up" .)