One moved out day before receiving a signal (7)
I believe the answer is:
evacuee
'one moved out' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'day before receiving a signal' is the wordplay.
'day before' becomes 'eve' (the eve of something is the night before).
'receiving' means one lot of letters goes inside another.
'signal' becomes 'cue' (as in an actor's cue).
'a'+'cue'='acue'
'eve' enclosing 'acue' is 'EVACUEE'.
Can you help me to learn more?
(Other definitions for evacuee that I've seen before include "one's moved to a safer place" , "One removed from place or danger as in war" , "Person escaping an area of danger" , "Person removed from dangerous place" , "One rescued" .)