不老

bùlǎo
  1. (literary) eternal youth; immortality
  2. eternal youth; immortality

Wiktionary

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
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 outdated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

Containing this entry

寶刀不老 bǎodāobùlǎo
  1. lit. a good sword always remains sharp (idiom)
  2. fig. (of one's skills etc) to be as good as ever
  3. the old man still has it
長生不老 chángshēngbùlǎo (idiom) to live forever and never grow old
不老少 bùlǎoshǎo