rock hound
or rock·hound
noun Informal.
a geologist.
an amateur collector of rocks, fossils, or minerals.
Origin of rock hound
An Americanism dating back to 1920–25
Words nearby rock hound
rock garden,
rock glacier,
rock gunnel,
rock hill,
rock hind,
rock hound,
rock hounding,
rock hyrax,
rock island,
rock jasmine,
rock jock