Enter gate-keeper’s residence (5)
I believe the answer is:
lodge
This could be a double definition.
'enter gate' is the first definition.
'lodge' can be an answer for 'enter' (thesaurus). I am not sure about the 'gate' bit.
'keeper's residence' is the second definition.
'lodge' can be an answer for 'residence' (I've seen this before). I'm not certain of the 'keeper's' bit.
Can you help me to learn more?
(Other definitions for lodge that I've seen before include "Settle" , "Small house at gates of park or estate" , "Fix" , "Stay temporarily, with bed and board" , "residence" .)