腰部|ようぶyoubu[1]atamadaka (head-high)

1. no-adjectiveloins; hips; pelvic region; waist

• Synonym腰こしNeutralThe everyday word for the waist or lower back, focused on the body part; it also covers the firmness of noodles, so it is broader than 「腰部」.
• RelatedウエストラインNeutralLoanword for the waistline — the line marking the waist on clothing or the body; 「腰部」 refers to the waist area of the body itself.
• Related胴回りどうまわりNeutralThe girth — the circumference of the torso and its length; used for taking measurements and clothing, while 「腰部」 is the body area itself.

Use 「腰部」 in medical or formal descriptions of the waist, as in 「腰部の痛み」. In everyday speech say 「腰」. For the measurement around the waist use 「胴回り」, and for the waistline use 「ウエストライン」.

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

1. 腰こしの部分ぶぶん。