Lovers' rendezvous in the allotment? (11)
I believe the answer is:
assignation
I believe this clue is a double definition.
'lovers' rendezvous' is the first definition.
(an assignation is a date or meeting)
'allotment?' is the second definition.
(I know that allocation can be written as assignation)
'in the' is the link.
(Other definitions for assignation that I've seen before include "clandestine meeting" , "Go in as saint (anag.)" , "Secret rendezvous" , "Secret meeting" , "The date" .)