sporting blood

sporting blood idiom
Willingness to take risks, as in His sporting blood won't let him stay away from the races. This idiom uses sporting in the sense of “associated with gambling.”

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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