knuckle

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

a joint of a finger when the fist is closed (Freq. 3)
• Syn:
knuckle joint, metacarpophalangeal joint
• Hypernyms:
synovial joint, articulatio synovialis, diarthrosis
• Part Holonyms:
finger

II - verb

1. press or rub with the knuckles
• Hypernyms:
press
• Verb Frames:
- Somebody ----s something
2. shoot a marble while keeping one's knuckles on the ground
• Hypernyms:
shoot
• Verb Frames:
- Somebody ----s

• Từ đồng nghĩa / Synonyms:
  knuckle joint, metacarpophalangeal joint