Lunge desperately to get female in flood (6)
I believe the answer is:
engulf
'flood' is the definition.
(I've seen this before)
'lunge desperately to get female' is the wordplay.
'desperately' is an anagram indicator.
'to get' says to put letters next to each other.
'female' becomes 'f' (abbreviation).
'lunge' with letters rearranged gives 'engul'.
'engul'+'f'='ENGULF'
'in' acts as a link.
(Other definitions for engulf that I've seen before include "Completely overwhelm" , "Immerse, cover completely" , "Flood" , "Bury" , "Flu gen (anag) - overwhelm" .)