Can be verbally described as first and last elf story with a moral (7)
I believe the answer is:
effable
'can be verbally described' is the definition.
I can't tell whether this defines the answer.
'first and last elf story with a moral' is the wordplay.
'first and last' says to hollow out the word (remove centre letters) (only the first and last letters are used).
'story with a moral' becomes 'fable' (a fable imparts a moral lesson).
'elf' with its middle taken out is 'ef'.
'ef'+'fable'='EFFABLE'
'as' is the link.
Can you help me to learn more?
(Another definition for effable that I've seen is " not beyond words".)