This is the kanji for sky. It can also mean empty or to make/be unoccupied.

on readings:
kun readings:
  • sora
  • a
  • kara
examples:
hoshizora starry sky
karate karate
kōkū aviation
便 kōkūbin airmail
kūhaku a blank, vacuum
kūki air
kūkou airport
kūsou daydream
kūten idling (of an engine)

links:
Wiktionary
Japanese homepage | top

Last addition on 19 February 2025 by Bradley James Wogsland.