Crossword Genius

Obscure book? This description might help (5)

Ross

I believe the answer is:

blurb

I'm a little stuck... Click here to teach me more about this clue!

'this description might help' is the definition.
'blurb' can be an answer for 'description' (I have seen 'Promotional description' mean 'blurb' so perhaps 'description' could also mean 'blurb'). I am unsure of the remainder of the definition.

'obscure book?' is the wordplay.
'obscure' becomes 'blur' (both can mean to vague or indistinct).
'book?' becomes 'b' (abbreviation for book).
'blur'+'b'='BLURB'

Can you help me to learn more?

(Other definitions for blurb that I've seen before include "Advertising text" , "Publisher's book description" , "Advertising description praising something" , "Fulsome advertising matter" , "stuff on jacket" .)

I've seen this clue in The Times and The Sun.
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