Collins Chinese Dictionary Plus (3rd edition), 2011:
界
jiè 名
1
(=界限) boundary
- 国(國)界 guójiè national boundaries
2
(=阶层) circles (pl )
- 各界人士 gè jiè rénshì people from all walks of life
- 新闻(聞)界 xīnwénjiè media circles
3 (=范围) range
- 大开(開)眼界 dà kāi yǎnjiè broaden one's horizons
4
(=类别) category
- 动(動)物界 dòngwùjiè the animal kingdom