Pronunciation change

Verb change

Plain form
scour

Third-person singular
scours

Past tense
scoured

Past participle
scoured

Present participle
scouring

 
The dark green upper surface is rough and can be used for scouring (sense 1) kitchenware, and kitchen and bathroom surfaces.
  1. (transitive) If you scour something, you clean or polish something by scrubbing it hard with an abrasive or cleaning agent.
    He scoured the burnt food from the pan.
  2. (transitive & intransitive) To (cause livestock to) suffer from diarrhoea.
    If a lamb is scouring, do not delay treatment.

Noun change

Singular
scour

Plural
scours

  1. Scour is the action of rubbing something hard to clean or brighten it.
    Give the pot a good scour.