二老

èrlǎo
  1. mother and father
  2. parents

CEDICT

  1. Used other than figuratively or idiomatically: see 二 (èr), 老 (lǎo).
  2. the two elderly parents
  3. two elders; two venerable persons

Wiktionary

  1. 尊稱同時或異代齊名的長者。
  2. 父母。

重編國語辭典

Entry Composition

1 二 èr
  1. two
  2. 2
  3. (Beijing dialect) stupid
2 老 lǎo
  1. prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity
  2. old (of people)
  3. venerable (person)
  4. experienced
  5. of long standing
  6. always
  7. all the time
  8. of the past
  9. very
  10. outdated
  11. (of meat etc) tough

Related entries

所生 suǒshēng parents (father and mother)
父母親 fùmǔqīn parents
你父母親在家嗎？

Were your mother and father home?

Source: Tatoeba

爹娘 diēniáng (dialect) parents