A character/term expressing reverence or respect. It denotes respect or deference toward people or things. It's often seen in compound words rather than alone.
『敬』という字は、尊敬や礼儀を表す語として古くから使われてきた。
The character 'kei' (敬) has long been used to express respect and manners.
年長者には敬（けい）を払うべきだという考え方は多くの文化にある。
The idea that one should show 'kei' (respect) to elders exists in many cultures.