Father is around and about (4)
I believe the answer is:
sire
'father' is the definition.
(I've seen this before)
'is around and about' is the wordplay.
'around' says the letters should be written backwards.
'and' means one lot of letters go next to another.
'about' becomes 're' (regarding**).
'is' written backwards gives 'si'.
'si'+'re'='SIRE'
(Other definitions for sire that I've seen before include "Male parent of an animal" , "Generator" , "Old form of address to king - rise to it" , "Rise for male parent (4)." , "Foal's father" .)