Can head of trafficking ring enable one to infiltrate? (6)
I believe the answer is:
toilet
'can' is the definition.
('toilet' can be a synonym of 'can')
'head of trafficking ring enable one to infiltrate?' is the wordplay.
'head of' says to take the initial letters.
'ring' becomes 'o'.
'enable' becomes 'let'.
'one' becomes 'i' (Roman numeral).
'to infiltrate?' indicates putting letters inside.
The first letter of 'trafficking' is 't'.
'o'+'let'='olet'
'olet' going around 'i' is 'oilet'.
't'+'oilet'='TOILET'
(Other definitions for toilet that I've seen before include "something to go on?" , "Plumbing fixture" , "It means washing" , "A formal loo" , "where penny the cost?" .)