noun
Refers to specific points on the body used in acupuncture treatment.
鍼のつぼを刺激すると、肩こりが楽になる。
Stimulating acupuncture points can relieve stiff shoulders.
つぼ alone can mean 'pressure point' or 'vital point' in a broader sense, including non-acupuncture contexts.
経穴 is the formal medical term for acupuncture points, while 鍼のつぼ is a more everyday expression.
Compound of 鍼 (はり, 'acupuncture needle') + の (possessive particle) + つぼ ('point, spot'). The term transparently describes a point for acupuncture.