长房

長房
zhǎngfáng

eldest branch of a family (i.e. that of the eldest son)

Wiktionary

Entry Composition

=1 长 cháng
  1. long
  2. (bound form) length
  3. (bound form) strong point; forte
  4. (bound form) to be good at
  5. (literary) surplus; spare (Taiwan pr. zhàng)
=1 长 zhǎng
  1. chief
  2. head
  3. elder
  4. to grow
  5. to develop
  6. to increase
  7. to enhance
=2 房 Fáng surname Fang
=2 房 fáng
  1. house
  2. room
  3. branch of an extended family
  4. classifier for family members (or concubines)

classifier: 間