Lecture at a specific location (7)
I believe the answer is:
address
I believe this is a double definition.
'lecture' is the first definition.
(address a speech to an audience)
'a specific location' is the second definition.
(a particular address)
'at' acts as a link.
(Other definitions for address that I've seen before include "Deliver a speech" , "Speech - written on an envelope?" , "Attend" , "lecture?" , "Direct words at" .)