介 jiè
noun
: to introduce
: to lie between; between
: forerunner, herald, harbinger
: shell; armor
Kun Reading
介す | かいす kaisu OR かいする kaisuru
godan verb with su ending | transitive verb
: to use as an intermediary; to mediate; to assist
: to worry; to mind; to care
On Reading
カイ kai
counter
: counter for generations
: (geological) epoch