切口

qièkǒu
  1. slang
  2. argot
  3. private language used as secret code

CEDICT

argot; jargon; slang; private language used as secret code

Wiktionary

祕密帮会或各行业中特用的隐语。

重編國語辭典

Homographs

切口 qiēkǒu
  1. incision
  2. notch
  3. slit
  4. gash
  5. margin of a page
  6. trimmed edge (of a page in a book)

Entry Composition

1 切 qiè
  1. definitely; absolutely (not)
  2. (scoffing or dismissive interjection) Yeah, right.; Tut!
  3. to grind
  4. (bound form) close to
  5. (bound form) eager
  6. to correspond to
  7. (used to indicate that the fanqie 反切 fǎnqiè system should be applied to the previous two characters)
2 口 kǒu
  1. mouth
  2. classifier for things with mouths (people, domestic animals, cannons, wells etc)
  3. classifier for bites or mouthfuls

Related entries

俚语 lǐyǔ slang
学习外语里的俚语很有趣。

It's fun to learn slang words in foreign languages.

Source: Tatoeba

行语 hángyǔ
  1. slang
  2. jargon
  3. cant
  4. lingo
  5. patois
  6. argot
土话 tǔhuà
  1. vernacular
  2. slang
  3. dialect
  4. patois
唇典 chúndiǎn
  1. argot
  2. codeword
黑话 hēihuà
  1. argot
  2. bandits' secret jargon
  3. malicious words