An amusing little piece from Tolstoy (3)
I believe the answer is:
Here is my best explanation:
'an amusing little' is the definition.
'toy' can be an answer for 'little' (thesaurus). I'm unsure of the 'an amusing' bit.
'piece from tolstoy' is the wordplay.
'TOY' is hidden in amongst the letters.
But, I'm not sure how the hidden word is indicated.