Quack keeping two ducks closer? (4)
I believe the answer is:
door
'quack' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'keeping two ducks closer?' is the wordplay.
'keeping' means one lot of letters goes inside another (some letters kept inside).
'two ducks' becomes 'oo'.
'closer?' becomes 'dr' (I can't explain this - if you can you should give a lot more credence to this answer).
'oo' inserted within 'dr' is 'DOOR'.
Can you help me to learn more?
(Other definitions for door that I've seen before include "Swinging barrier" , "Opener" , "Entry point" , "Threshold" , "Alternative to knocker" .)