Familiar name of a northeastern delta (3)
I believe the answer is:
ned
'familiar name' is the definition.
'Ned' can be an answer for 'name'. I'm not certain of the 'familiar' bit.
'a northeastern delta' is the wordplay.
'a northeastern' becomes 'ne' (I can't justify this - if you can you should give a lot more credence to this answer).
'delta' becomes 'd' (phonetic alphabet: alpha, bravo, charlie etc.).
'ne'+'d'='NED'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for ned that I've seen before include "rough" , "A den for Edward" .)