家督

jiādū
  1. (literary) eldest son
  2. eldest son

Wiktionary

Entry Composition

=1 家 jiā used in 家伙 jiāhuo and 家俱 jiājù
=1 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
=1 家 jie only used in 大家 (dàgū)
2 督 dū (bound form) to supervise