verb

• (transitive) To clean, polish, or wash (something) by rubbing and scrubbing it vigorously, frequently with an abrasive or cleaning agent.
  "He scoured the burnt food from the pan."
• (transitive) To remove debris and dirt (from something) by purging; to sweep along or off by a current of water.
  "I will redeeme all this on Percies head, / And in the cloſing of ſome glorious day / Be bold to tell you that I am your ſonne, / When I will weare a garment all of bloud, / And ſtaine my fauors in a bloudy maske, / Which waſht away ſhall ſcoure my ſhame with it, […]"
• (transitive, veterinary medicine) To clear the digestive tract (of an animal) by administering medication that induces defecation or vomiting; to purge.
  "to scour a horse"
• (ambitransitive, veterinary medicine) To (cause livestock to) suffer from diarrhoea or dysentery.
  "If a lamb is scouring, do not delay treatment."

verb

• (transitive) To search an area thoroughly.
  "They scoured the scene of the crime for clues."
• (intransitive) To run with speed; to scurry.
  "Lord. Behind the tuft of Pines I met them, neuer Saw I men scowre so on their way: I eyed them Euen to their Ships."
• (transitive) To move swiftly over; to brush along.
  "When Ajax ſtrives, ſome Rock's vaſt Weight to throw, / The Line too labours, and the Words move ſlow; / Not ſo, when ſwift Camilla ſcours the plain, / Flies o'er th'unbending Corn, and skims along the Main."