He will tip off a woman (4)
I believe the answer is:
ella
'woman' is the definition.
(woman's name)
'he will tip off a' is the wordplay.
'will' becomes 'll' (contracted form, as in 'he'll' - 'he will').
'tip off' means to remove the first letter (the first letter or 'tip' is removed).
'he'+'ll'='hell'
'hell' with its initial letter removed is 'ell'.
'ell'+'a'='ELLA'
(Other definitions for ella that I've seen before include "Woman" , "Girl" , "Great late jazz singer . . . . Fitzgerald" , ".... Fitzgerald, late great jazz diva" , "- Wheeler Wilcox, US poet" .)