Crossword Genius

Book about Tesla is gossip (6)

Ross

I believe the answer is:

tittle

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

This clue might be a double definition.

'book about tesla' is the first definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

'gossip' is the second definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'is' is the link.

Can you help me to learn more?

(Other definitions for tittle that I've seen before include "Smallest part (after a jot?)" , "Tiny printed mark" , "Companion to jot" , "A printed dot as in i" , "A tiny bit" .)

I've seen this clue in The Independent.
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