Kalmar "sanda mai birch" yawanci tana nufin tarin ƙananan rassan bishiyar birch ko rassan bishiyar birch, an haɗa su tare kuma ana amfani da su don azabtar da jiki, musamman a baya. A cikin wannan mahallin, kuma ana iya kiransa "canjin birch". Ita kanta kalmar “Birch” tana nufin wani nau’in bishiyar bishiya mai santsi, fari ko bawon azurfa, da siriri rassan.
