UP主

U Pzhǔ
  1. (Internet slang) uploader (person who uploads a video or other content to the Internet)
  2. pronounced àpuzhǔ
  3. (loanword from Japanese うｐ主, "upunushi")

CEDICT

internet slang loanword

Entry Composition

1
U
Not in lexicon.
2 P P
  1. (slang) femme (lesbian stereotype)
  2. to photoshop
=3 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)
=3 主 zhù
  1. Classifier for events.
  2. alternative form of 注 (zhù, “to pour into”)