Gum: n. Gum is a viscous and translucent vegetable juice, which oozes from certain plants, naturally or after incision of the bark.
There are two groups of gums: the gums proper and the gum-resins.
The erasers themselves:
- Gum arabic comes from two species of acacia trees (Acacia verek and Acacia arabica) from Sudan and Egypt. Known since antiquity, it comes in small rounded pieces, white or brown, very crumbly, and...
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