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rock hounding

American  
Or rockhounding

noun

  1. the activity of searching for and collecting rocks, fossils, or minerals.

Etymology

Origin of rock hounding

An Americanism dating back to 1945–50; rock hound + -ing 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.