Albert went round Ulster plant (4)
I believe the answer is:
anil
'plant' is the definition.
The answer is an example.
'albert went round ulster' is the wordplay.
'albert' becomes 'al'.
'went round' means one lot of letters goes inside another (I've seen this in other clues).
'ulster' becomes 'ni' (Northern Ireland).
'al' going around 'ni' is 'ANIL'.
(Other definitions for anil that I've seen before include "It produces dye" , "Dye for nail" , "Indigo (plant or dye)" , "Shrub yielding indigo" , "Indian man" .)