How to say "fang" in Japanese

• 牙きばCommon
  nounThe common word for a long, pointed animal tooth: the fang of a snake or beast of prey, or a tusk. Typical context: describing animals such as snakes, tigers, or boars.
  ライオンはさらに牙きばをむき出だした。↗

  The lion bared its teeth even further.
• 歯の根はのね
  nounA less common word meaning the root of a tooth; it matches 'fang' only through the English word's older sense. For an animal's fang it is seldom the word you want — use 牙.

牙 is the common word for the long pointed tooth of an animal (and for tusks), while 「歯の根」 means the root of a tooth and matches 'fang' only via the English word's older sense.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 牙きばtusk
• 歯の根はのねroot of a tooth