tappi

noun
  1. A Finnish term for a peg or stopper used to close or seal a container, such as a barrel or bottle. noun
    He inserted the tappi into the wine barrel to prevent the liquid from spilling.
    The tappi was made of cork and fit snugly into the neck of the bottle.
  2. In a broader sense, it can refer to any small object used to block or seal an opening. noun
    She used a rubber tappi to seal the hole in the inflatable pool.
    The plumber recommended using a tappi to temporarily stop the leak.