Stand before entrance barrier needing to be raised (7)
I believe the answer is:
etagere
'barrier needing to be raised' is the definition.
I can't tell whether this defines the answer.
'stand before entrance' is the wordplay.
'stand' says the letters should be written in reverse (I've seen 'standing' mean this (in a down clue, letters stand up)).
'before' becomes 'ere' (poetic term).
'entrance' becomes 'gate' (type of entrance).
'ere'+'gate'='eregate'
'eregate' in reverse letter order is 'ETAGERE'.
Can you help me to learn more?
(Other definitions for etagere that I've seen before include "Stand of shelves" , "place for knick-knacks" , "Piece of furniture with open display shelves" , "Shelved display stand" , "Shelved furniture item" .)