Play wearing medical dressing that's really strong tissue (8)
I believe the answer is:
ligament
'really strong tissue' is the definition.
'ligament' can be an answer for 'tissue' (ligament is a kind of tissue). I am unsure of the 'really strong' bit.
'play wearing medical dressing' is the wordplay.
'play' becomes 'game'.
'wearing medical' becomes 'lint' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'dressing' means one lot of letters goes inside another (inserted letters are dressed or clad in others).
'game' placed into 'lint' is 'LIGAMENT'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for ligament that I've seen before include "Fibrous tissue joining bones or cartilage" , "What footballer may damage" , "Link between bones or cartilages" , "Band of tissue joining bones" , "Tough fibrous tissue in the body" .)