noun
knee
B1
Knie means 'knee', the joint between thigh and lower leg. It is a neuter noun: das Knie. The plural is Knie — unchanged in form — so die Knie. Declension: das Knie (sing.), die Knie (pl.), genitive des Knies. Common in anatomy and injuries.
Examples
Mein Knie tut weh.
My knee hurts.
Beim Sport habe ich mir das Knie verletzt.
I injured my knee while playing sports.
Der Sportler verletzte sich am Knie, als er fiel, sodass er nicht weiterlaufen konnte.
The athlete injured his knee when he fell, so that he could not continue running.
Details
Mnemonics
visualize bending your knee when you kneel
sounds like 'knee' in English
das Knie — 'das' small and neutral like many single body parts
Notes
Common everyday noun for the joint between thigh and lower leg. Plural is identical in form ('die Knie').