Being a specialist, information technology may finish (6)
I believe the answer is:
entity
'being' is the definition.
(I've seen this in other clues)
'a specialist information technology may finish' is the wordplay.
'a specialist' becomes 'ent' (Ear, Nose and Throat specialist).
'information technology' becomes 'IT' (common abbreviation).
'finish' indicates one should take the final letters.
The final letter of 'may' is 'y'.
'ent'+'it'+'y'='ENTITY'
(Other definitions for entity that I've seen before include "Something existing in its own right" , "Object" , "Something with independent existence" , "It exists as a separate thing" , "It exists as a seperate thing (6)" .)