Layabout led astray in centre of Beirut (5)
I believe the answer is:
idler
'layabout' is the definition.
(I know that idler is a class)
'led astray in centre of beirut' is the wordplay.
'astray' indicates an anagram.
'in' means one lot of letters goes inside another.
'centre of' indicates the central letters.
The central letters of 'beirut' are 'ir'.
'led' is an anagram of 'dle'.
'dle' put within 'ir' is 'IDLER'.
(Other definitions for idler that I've seen before include "One reluctant to work" , "Someone unemployed" , "Man off watch" , "Not working so hard" , "Wastrel; The ---, Dr Johnson essays" .)