pick someone's brain

pick (one's) brain(s)

To ask one questions in order to obtain detailed information or advice. You should pick John's brain sometime. He knows all about car engines. I've just started playing professionally, and I'd love to pick your brains for any tips you might have.
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pick someone's brain

Obtain ideas or information from another person, as in I'm out of ideas for decorating-let me pick your brain. This term alludes to picking clean a carcass. [Mid-1800s]
See also: brain, pick

pick someone's brain, to

To gather information or ideas from someone who is presumably more expert or more imaginative. This analogy to picking clean a bone or carcass dates from the mid-nineteenth century. “Do you possess the art of picking other people’s brains,” wrote clergyman Benjamin Jowett (1817–93). For picking one’s own brain, see cudgel one’s brains.
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References in periodicals archive ?
LIBRA: You may have some good connections and why not use this time to pick someone's brains or get some advice.