Gate allowing one to enter until rest dispersed (9)
I believe the answer is:
turnstile
'gate' is the definition.
(I know that turnstile is a type of gate)
'until rest dispersed' is the wordplay.
'dispersed' indicates an anagram.
'until'+'rest'='untilrest'
'untilrest' with letters rearranged gives 'TURNSTILE'.
'allowing one to enter' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for turnstile that I've seen before include "Rotating gate" , "Control for spectators' entry" , "where spectators pass" , "Gate admitting one at a time" , "Pivoting gate, to football grounds say" .)