Bug born and led astray (6)
I believe the answer is:
needle
'bug' is the definition.
(annoy)
'born and led astray' is the wordplay.
'born' becomes 'nee' (I've seen this before).
'and' says to put letters next to each other.
'astray' indicates anagramming the letters.
'led' with letters rearranged gives 'dle'.
'nee'+'dle'='NEEDLE'
(Other definitions for needle that I've seen before include "anger" , "Long thin leaf of pine tree" , "be irritating ?" , "Thin pointer; antagonise" , "Continually annoy" .)