crook a finger


New Member
From Mervyn Peake's "Titus Groan:

"They turned to leave the room, and the Doctor opened his eyes, for he had almost fallen asleep with one albow on the central table and his hand propping his head. He arose to his feet but could do nothing more elegant than to crook a finger, for he was too tired".

I know what "to crook a finger" means literally but I simply cannot imagine it in this context. Is it an idiomatic use of the expression? Or if not, why the Doctor would want to crook his finger when saying goodbye to his guests?
  • PaulQ

    English - England
    There is no idiomatic use of "to crook a finger"; as crooking a finger is about is small a movement as you can make, Peake uses this to express the Doctor's tiredness.
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