scouring

(noun) moving over territory to search for something. Example: "Scouring the entire area revealed nothing."

(noun) the act of cleaning a surface by rubbing it with a brush and soap and water. Synonyms: scrub, scrubbing.

(verb) examine minutely. Synonyms: scour. Example: "The police scoured the country for the fugitive."

(verb) clean with hard rubbing. Synonyms: scrub, scour. Example: "She scrubbed his back."

(verb) rub hard or scrub. Synonyms: scour, abrade. Example: "Scour the counter tops."

(verb) rinse, clean, or empty with a liquid. Synonyms: flush, scour, purge. Examples: "Flush the wound with antibiotics." "Purge the old gas tank."