Some abandon Nairobi woman (5)
I believe the answer is:
donna
'woman' is the definition.
(donna is a kind of woman)
'some abandon nairobi' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'DONNA' is hidden in the letters of 'abandon nairobi'.
(Other definitions for donna that I've seen before include "Title of Spanish or Portuguese lady" , "See 10" , "Italian woman of rank" , "Girl" , "Title of Spanish or Italian lady" .)