xī​gài HSK7

knee

膝盖 (膝蓋) xī​gài
knee noun
the joint between the thigh and the lower leg

He injured his knee during the football match.

kneel down noun
to kneel down as a sign of extreme admiration or respect (Internet slang)

Your skills are amazing; I bow down to you.

Frequency

Movie subtitles
20.4 per million appears in 8% of films
Written text
10.5 per million

Details

HSK 2.0
Level 6
HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT