A loud female during lecture must leave platform (8)
I believe the answer is:
scaffold
'must leave platform' is the definition.
'scaffold' can be an answer for 'platform' (scaffold is a kind of platform). I am not certain of the 'must leave' bit.
'a loud female during lecture' is the wordplay.
'loud' becomes 'f' (short for forte - 'loud' in music).
'female' becomes 'f' (abbreviation).
'during' is an insertion indicator.
'lecture' becomes 'scold' ().
'a'+'f'+'f'='aff'
'aff' put into 'scold' is 'SCAFFOLD'.
Can you help me to learn more?
(Other definitions for scaffold that I've seen before include "Gibbet" , "Framework of poles and planks on construction site" , "Execution platform" , "sort of capital punishment!" , "Old platform for hangings" .)