Rubber
/rˈʌbər/
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Definition
(noun) Pliable material derived from the sap of the rubber tree; a hydrocarbon biopolymer of isoprene.
Sentence Examples
The Mayas made their balls out of rubber.
Tires wear down because of friction between the rubber and the road surface.
CEFR Practice Quiz
The surgeon pulled on a pair of sterile ____ gloves before beginning the procedure.