Possible Clues:

• Adhesive setting for tooth and tongue
• Fool knocked over most of coffee, a kind of sap
• Product of acacia trees
• It sticks tongue against part of mouth
• Complex mixture of glycoproteins and polysaccharides, used primarily in the food industry
• Craftily rub a magic stick with it
• Exudation used in glues and incense
• Fool around with language on sticker
• Substance exuded by acacia
• Ingredient of 16 across