口徑

口径
kǒujìng
  1. bore; caliber; diameter; aperture
  2. (fig.) stance (on an issue); version (of events); account; narrative; line

CEDICT

Entry Composition

1 口 kǒu
  1. mouth
  2. classifier for things with mouths (people, domestic animals, cannons, wells etc)
  3. classifier for bites or mouthfuls
2 徑 jìng
  1. footpath
  2. track
  3. diameter
  4. straight
  5. directly