Somehow get rid of set joint (8)
I believe the answer is:
jettison
'somehow get rid' is the definition.
I can't tell whether this defines the answer.
'of set joint' is the wordplay.
'of' indicates an anagram (the answer comes from or 'of' the letters).
'set'+'joint'='setjoint'
'setjoint' anagrammed gives 'JETTISON'.
Can you help me to learn more?
(Other definitions for jettison that I've seen before include "'Throw away, cast overboard (8)'" , "Throw things overboard to lighten ship" , "Reject" , "Form of motor racing" , "Throw goods overboard, or discard what is unwanted" .)