buck for

buck for idiom
Strive for, aim for, as in She's bucking for Editor of the Year. Strongly associated with seeking a promotion in the military, this expression originated in the late 1800s and is now applied more widely.

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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