Spike, masculine friend that is going round (6)
I believe the answer is:
impale
'spike' is the definition.
('impale' can be a synonym of 'spike')
'masculine friend that is going round' is the wordplay.
'masculine' becomes 'm'.
'friend' becomes 'pal' (pal is a kind of friend**).
'that is' becomes 'ie' ('i.e.' can be a synonym of 'that is').
'going round' is an insertion indicator.
'm'+'pal'='mpal'
'mpal' placed within 'ie' is 'IMPALE'.
(Other definitions for impale that I've seen before include "transfix with sharp item" , "Fix as on a sharp stick" , "Spike" , "Pierce with lance etc" , "go through with it" .)