List of competitors in lobby (5)
I believe the answer is:
entry
I believe this is a triple definition!
'list of competitors' is the first definition.
(I've seen this before)
'in' is the second definition.
(thesaurus)
'lobby' is the third definition.
(thesaurus)
(Other definitions for entry that I've seen before include "The act of going in" , "Competitor" , "Way in; item in list" , "Competitors - way in" , "Item in an account book" .)