Might heads of security come to be taken in by drug smuggler? (6)
I believe the answer is:
muscle
'might' is the definition.
(I've seen this before)
'heads of security come to be taken in by drug smuggler?' is the wordplay.
'heads of' suggests taking the first letters.
'to be taken in by' means one lot of letters goes inside another.
'drug smuggler?' becomes 'mule' (I've seen this in other clues).
The first letters of 'security come' is 'sc'.
'sc' going into 'mule' is 'MUSCLE'.
(Other definitions for muscle that I've seen before include "Physical power" , "Body tissue - strength" , "Strength - to move limbs, etc" , "Eg, biceps" , "Might, perhaps" .)