noun
General term for a specific part or section of something, often used in technical or formal descriptions.
機械の局部を拡大して見る。
Look at a part of the machine magnified.
この地図は市の局部しか示していない。
This map shows only a section of the city.
noun
affected part; affected area
Medical term for a specific part of the body that is diseased or injured; often used in phrases like 局部麻酔 (local anesthesia).
医者は患部の局部だけを消毒した。
The doctor disinfected only the affected area.
局部麻酔で手術を受けた。
I had surgery under local anesthesia.
noun
Euphemistic term for the genital area; used in medical, educational, or polite contexts.
局部を清潔に保つことが大切です。
It is important to keep your private parts clean.
その図鑑には人体の局部の説明もある。
The illustrated reference book also explains the human genitals.
陰部 is a direct anatomical term for 'genital region', while 局部 is a more euphemistic and broader term that can also mean 'private parts'.
Compound of 局 (limited, local) and 部 (part, section). The meaning 'private parts' developed as a euphemistic extension of 'local part'.