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|Noun||1.||gum acacia - gum from an acacia tree; used as a thickener (especially in candies and pharmaceuticals)|
acacia - any of various spiny trees or shrubs of the genus Acacia
gum - any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying
Senegal gum - gum arabic from the vicinity of the Senegal river