rub up

• Polir, limpar ou dar brilho a algo por meio de atrito, geralmente usado no contexto de limpeza ou cuidado com superfícies.

To polish, clean, or make something shine by rubbing it, often used in the context of cleaning or maintaining surfaces.

1. Polish or cleanB2informalbritish

   To clean, polish, or make something smooth by rubbing.

   Polir esfregando

   • He rubbed up the silverware until it shone.
   • She rubbed up the old table to restore its finish.
   • The cleaner rubbed up the brass handles on the door.

2. Refresh knowledgeB2informalbritish

   To review or improve one's knowledge or skill in a particular area.

   Atualizar conhecimentos

   • I need to rub up my French before the trip.
   • He rubbed up on his math skills for the exam.
   • She spent the weekend rubbing up on the company's policies.