Beer has bit of a head — dash round? (5,3)
I believe the answer is:
brown ale
'beer' is the definition.
(I've seen this before)
'bit of a head dash round?' is the wordplay.
'bit of a head' becomes 'brow' ('brow' is part of 'head').
'dash' becomes 'elan' ('elan' can be a synonym of 'dash'**).
'round?' shows that the letters should be reversed in order (I've seen 'round' mean this).
'elan' back-to-front is 'nale'.
'brow'+'nale'='BROWN ALE'
'has' acts as a link.
(Other definitions for brown ale that I've seen before include "bottled beer" , "Dark, mild beer" , "Dark, malty beer" , "Noble war (anag) - drink" , "Type of beer" .)