Suppress article containing nonsense about lieutenant (8)
I believe the answer is:
throttle
'suppress' is the definition.
(thesaurus)
'article containing nonsense about lieutenant' is the wordplay.
'article' becomes 'the' (the 'definite article' part of speech).
'containing' means one lot of letters goes inside another.
'nonsense' becomes 'rot' (I've seen this before).
'about lieutenant' becomes 'tl' (I can't explain this - if you can you should believe this answer much more).
'rot'+'tl'='rottl'
'the' enclosing 'rottl' is 'THROTTLE'.
Can you help me to learn more?
(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" , "Check" .)