通家

tōngjiā
  1. (literary) entire family; whole family
  2. (literary) expert; master; professional
  3. (literary) longstanding friendship between two families; generations of family friendship
  4. (literary) relation by marriage; affinity
  5. entire family; whole family
  6. expert; master; professional
  7. longstanding friendship between two families; generations of family friendship
  8. relation by marriage; affinity

Wiktionary

Entry Composition

=1 通 tōng
  1. to go through
  2. to know well
  3. (suffix) expert
  4. to connect
  5. to communicate
  6. open
  7. to clear
  8. classifier for letters, telegrams, phone calls etc
=1 通 tòng classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)
=2 家 jiā used in 傢伙 jiāhuo and 傢俱 jiājù
=2 家 jiā
  1. home
  2. family
  3. (polite) my (sister, uncle etc)
  4. classifier for families or businesses
  5. refers to the philosophical schools of pre-Han China
  6. noun suffix for a specialist in some activity, such as a musician or revolutionary, corresponding to English -ist, -er, -ary or -ian

classifier: 個
=2 家 jie only used in 大家 (dàgū)