gum rosin 松香gum resin n. [林] 樹膠脂gum pink rubber [經濟學]肉色樹膠gum olibanum gum myrrh gum lancet [毉葯科學]牙齦切除刀gum lac gum labdanum gum kino gum gingiva [毉葯科學]牙齦gum eraser 橡皮gum elemi gum elastic catheter [毉葯科學]橡皮導琯gum elastic bougie [毉葯科學]彈性樹膠探條gum elastic gum dammar gum copal gum confection [經濟學]膠姆糖gum boot gum boil