Flower I have found in middle of burrow (5)
I believe the answer is:
river
'flower' is the definition.
(A river flows and is therefore a flower)
'i have found in middle of burrow' is the wordplay.
'i have' becomes 'ive'.
'found in' means one lot of letters goes inside another.
'middle of' says to take the centre.
The middle letters of 'burrow' are 'rr'.
'ive' placed within 'rr' is 'RIVER'.
(Other definitions for river that I've seen before include "Eg, Thames or Nile" , "Natural flow of water" , "Large flow of liquid" , "Eg, Severn" , "eg Aire" .)