Charm gets a courier time (6)
I believe the answer is:
amulet
'charm' is the definition.
(I know that amulet is a type of charm)
'a courier time' is the wordplay.
'courier' becomes 'mule' (mule can informally mean a courier of drugs).
'time' becomes 't' (abbreviation).
'a'+'mule'+'t'='AMULET'
'gets' acts as a link.
(Other definitions for amulet that I've seen before include "Mascot" , "Lucky ornament" , "Protective trinket" , "Charm warding off evil" , "A type of lucky charm" .)