Safe house Andrew keeps doctor in (4,3,3)
I believe the answer is:
home and dry
'safe' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'house andrew keeps doctor in' is the wordplay.
'house' becomes 'home' (homing is a kind of housing).
'andrew' becomes 'andy' (Andy is short for Andrew).
'keeps' means one lot of letters goes inside another (inserted letters are kept inside).
'doctor in' becomes 'dr' (abbreviation. I am not sure about the 'in' bit.).
'andy' placed around 'dr' is 'anddry'.
'home'+'anddry'='HOME AND DRY'
Can you help me to learn more?
(Other definitions for home and dry that I've seen before include "Having achieved one's objective" , "Definitely safe or successful" , "In a position to reach a goal without much further difficulty" , "Successfully arrived at the end of a difficult enterprise" .)