Delivered some books for our sailors (4)
I believe the answer is:
born
'delivered' is the definition.
(I've seen this in another clue)
'some books for our sailors' is the wordplay.
'some' says to take the initial letters.
'for' means one lot of letters go next to another.
'our' becomes 'o' (I can't explain this - if you can you should give a lot more credence to this answer).
'sailors' becomes 'RN' (abbreviation for Royal Navy).
The initial letter of 'books' is 'b'.
'b'+'o'+'rn'='BORN'
Can you help me to learn more?
(Other definitions for born that I've seen before include "Innate" , "Brought into the world" , "Brought into existence" , "Ne/nee" , "Nee" .)