About
In traditional Chinese medicine terminology, 芤 (kōu) is a phono-semantic compound with the botanical radical 艹 (cǎo) on top, indicating a plant-related origin, and the phonetic component 孔 (kǒng) below. Its original meaning describes the hollow structure of a scallion stalk, emphasizing an emptiness within the cylindrical stem. This botanical sense was adapted by medical practitioners to name a specific diagnostic pulse, the "scallion-stalk pulse" (芤脉), characterized by a large, soft feel that is empty in the center, reflecting a direct transfer from plant anatomy to clinical pulse diagnosis.