Kid in the horseless clan? (5)
I believe the answer is:
tribe
'clan?' is the definition.
(I know that clan can be written as tribe)
'kid in the horseless' is the wordplay.
'kid' becomes 'rib' (I've seen this in another clue).
'in the' means one lot of letters goes inside another.
'horseless' becomes 'te' (I can't explain this - if you can you should believe this answer much more).
'rib' inserted within 'te' is 'TRIBE'.
Can you help me to learn more?
(Other definitions for tribe that I've seen before include "Division of, eg, North American natives" , "Group of related people" , "Traditional social group" , "Close-knit social group" , "Israelites' division" .)