Crossword Genius

Left supports socialist's leader jesting (5)

Ross

I believe the answer is:

sport

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

'jesting' is the definition.
(sport can mean jesting or joking)

'left supports socialist's leader' is the wordplay.
'left' becomes 'port' (left side of a ship - opposite of starboard).
'supports' means one lot of letters go next to another (bottom letters provide a support for the top ones).
'socialist's leader' becomes 's' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'port' put after 's' is 'SPORT'.

Can you help me to learn more?

(Other definitions for sport that I've seen before include "Fun; wear" , "Put on" , "Games" , "Recreation, play" , "Wear, display (an item)" .)

I've seen this clue in The Telegraph.
Want a hint initially instead of a full solution? Install my app