幼主

yòuzhǔ
  1. (literary) a young monarch; an underage monarch
  2. a young monarch; an underage monarch

Wiktionary

Entry Composition

=1 幼 yòu young
=1 幼 yào used in 幼眇 and 幼妙
=2 主 zhǔ
  1. owner
  2. master
  3. host
  4. individual or party concerned
  5. God
  6. Lord
  7. main
  8. to indicate or signify
  9. trump card (in card games)
=2 主 zhù
  1. Classifier for events.
  2. alternative form of 注 (zhù, “to pour into”)