含ふくみ綿わた

noun

wad of cotton; cotton roll

Primarily used in dentistry to refer to a small roll or wad of cotton placed in the mouth to absorb moisture or isolate teeth.

• 歯し科か治ち療りょうでは、含ふくみ綿わたを使つかって唾だ液えきを吸きゅう収しゅうさせることがあります。

  In dental treatment, a cotton roll is sometimes used to absorb saliva.