gingiva

Từ điển WordNet v3.1 - WordNet Dictionary

noun

the tissue (covered by mucous membrane) of the jaws that surrounds the bases of the teeth
• Syn:
gum
• Derivationally related forms:
gum (for: gum), gingival
• Hypernyms:
animal tissue
• Part Holonyms:
mouth, oral cavity, oral fissure, rima oris