ebonite

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a hard nonresilient rubber formed by vulcanizing natural rubber
• Syn:
hard rubber, vulcanite
• Hypernyms:
rubber, natural rubber, India rubber, gum elastic, caoutchouc

• Từ đồng nghĩa / Synonyms:
  hard rubber, vulcanite