Name of the bamboo tool used to smooth pottery in Bih and Rade language (Buôn Trấp village)

H’Loan Bkrong and H’Lân Êban say the name of the flat piece of bamboo used to smooth the outside of the pot with water, both after pre-forming on wet clay and after pre-forming the bottom on leather-hard clay. This bamboo stick is called knơr.