Suppress article containing nonsense about lieutenant (8)
I believe the answer is:
Here is my best explanation:
'suppress' is the definition.
(I've seen this before)
'article containing nonsense about lieutenant' is the subsidiary indication.
'article' becomes 'the' (**).
'containing' means one lot of letters goes inside another.
'nonsense' becomes 'rot' (I've seen this before).
'about' shows that the letters should be reversed in order.
'lieutenant' becomes 'lt'.
'lt' back-to-front is 'tl'.
'the' placed around 'rottl' is 'throttle'.
(Other definitions for throttle that I've seen before include "Valve to regulate the supply of fuel to the engine", "Strangle; fuel controller", "Accelerator - choke", "Strangulate", "Strangle the fuel valve", "Strangle; regulator valve", "Fuel-regulating valve in an engine", "Accelerator pedal", "Choke, strangle" and "Strangle with car pedal?".)