scour

nouns

a place that is scoured (especially by running water)
scour
is a type of (narrower)
a point located with respect to surface features of some region
"this is a nice place for a picnic"; "a bright spot on a planet"
place, spot, topographic point

verbs

examine minutely
"The police scoured the country for the fugitive"
scour
is derived from
scouring
is a type of (narrower)
try to locate or discover, or try to establish the existence of
"The police are searching for clues"; "They are searching for the missing man in the entire county"
look for, search, seek
clean with hard rubbing
"She scrubbed his back"
scour, scrub
is derived from
scourer
is derived from
scouring
rub hard or scrub
"scour the counter tops"
abrade, scour
rinse, clean, or empty with a liquid
"flush the wound with antibiotics"; "purge the old gas tank"
flush, purge, scour