My choice of central elements in building (4)
I believe the answer is:
lord
'elements in building' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'my choice of central' is the wordplay.
'my' becomes 'lor' (exclamation of surprise).
'choice' becomes 'ddddd' (I've seen this in another clue).
'of central' means to look at the middle letters (I've seen 'central' mean this).
The middle letter of 'ddddd' is 'd'.
'lor'+'d'='LORD'
Can you help me to learn more?
(Other definitions for lord that I've seen before include "10th" , "Titled nobleman" , "Proprietor of a manor?" , "Male 18" , "Member of the aristocracy" .)