ニーnii

1. nounknee

• Synonym膝ひざNeutralThe everyday word for the knee, the most common choice in daily use; it also refers to the upper thighs when sitting (the lap).
• Related膝関節ひざかんせつWrittenA written/formal medical term for the knee joint, focusing on the joint's structure; 「ニー」 is a loanword that appears mainly in compounds like 「ニーハイ」.

「ニー」 is a loanword used mostly in compounds like 「ニーハイソックス」 and 「ニーパッド」. For the knee itself, say 「膝」 in everyday speech; 「膝関節」 is the medical term for the joint.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 脚あしの太ふとももとすねの間あいだにある関節かんせつ。