Bowling involving at least three limbs? (3,4)
I believe the answer is:
leg spin
'bowling' is the definition.
(type of spin bowling in cricket)
'at least three limbs?' is the wordplay.
'at' is a charade indicator (letters next to each other).
'least three' becomes 'pin' (I can't explain this - if you can you should give a lot more credence to this answer).
'limbs?' becomes 'legs' (leg is a kind of limb).
'pin' after 'legs' is 'LEG-SPIN'.
'involving' is the link.
(Other definitions for leg spin that I've seen before include "What perhaps turns off" , "Cricket ball" , "style of delivery" , "Bowling technique" , "Delivery method" .)