Type of ray in the south glides along using these (6)
I believe the answer is:
skates
'along using these' is the definition.
The definition suggests an adverb but the answer is not.
'type of ray in the south glides' is the wordplay.
'type of ray' becomes 'skate' (I've seen this before).
'in the south' says to take the final letters (I've seen 'in the south of' mean this (in a down clue, the bottom letter)).
The last letter of 'glides' is 's'.
'skate'+'s'='SKATES'
Can you help me to learn more?
(Other definitions for skates that I've seen before include "Glides along on the big fish?" , "Boots with blades or wheels" , "Wear for rink" , "Glides over, say ice" , "fishes" .)