Blood type: bloody (7)
I believe the answer is:
kindred
'blood' is the definition.
(thesaurus)
'type bloody' is the wordplay.
'type' becomes 'kind' (I've seen this before).
'bloody' becomes 'red'.
'kind'+'red'='KINDRED'
(Other definitions for kindred that I've seen before include "Related; similar in kind" , "Relationship by blood" , "Affinity" , "Similarity in character" , "Related by blood - having similar qualities" .)