Current racket almost overthrown after 50% of income is cut (8)
I believe the answer is:
incision
'cut' is the definition.
(incision is a kind of cut)
'current racket almost overthrown after 50% of income is' is the wordplay.
'current' becomes 'I' (symbol for electric current).
'racket almost' becomes 'no' (I can't justify this - if you can you should give a lot more credence to this answer).
'overthrown' is a reversal indicator.
'after' means one lot of letters go next to another.
'50% of' indicates taking half.
'no' written backwards gives 'on'.
'income' halved is 'inc'.
'i'+'on'='ion'
'inc'+'is'='incis'
'ion' after 'incis' is 'INCISION'.
Can you help me to learn more?
(Other definitions for incision that I've seen before include "Cut, gash" , "Surgical ten across" , "Cut made surgically into the body" , "Cut as made with surgeon's knife" , "A surgical cut into the body" .)