Speech might indicate where one's home is (7)
I believe the answer is:
address
'speech' is the definition.
(address is a kind of speech)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for address that I've seen before include "Treat" , "hail maybe?" , "Speak to, approach" , "prepare for post" , "Speak to - direct" .)