Engineer hearing about lead in long pipe (8)
I believe the answer is:
narghile
'pipe' is the definition.
(I know that narghile is a type of pipe)
'engineer hearing about lead in long' is the wordplay.
'engineer' is an anagram indicator.
'about' indicates putting letters inside.
'lead in' says to take the initial letters.
The first letter of 'long' is 'l'.
'hearing' is an anagram of 'narghie'.
'narghie' placed around 'l' is 'NARGHILE'.
(Other definitions for narghile that I've seen before include "Hookah" , "pipe" .)