Singular shape causes dispute about what it should be called (5)
I believe the answer is:
scone
'dispute about what it should be called' is the definition.
I can't judge whether this definition defines the answer.
'singular shape' is the wordplay.
'singular' becomes 's' (abbreviation sometimes used in dictionaries).
'shape' becomes 'cone' (cone shape is a kind of shape).
's'+'cone'='SCONE'
'causes' acts as a link.
Can you help me to learn more?
(Other definitions for scone that I've seen before include "Scottish location" , "Tea-time treat" , "Plain teatime cake" , "A little cake" , "Accompaniment for tea" .)