barbule

bar.bule

n.Zoology （名词）【动物学】
A small barb or pointed projection, especially one of the small projections fringing the edges of the barbs of feathers.
羽小支：小羽支或尖状凸起物，尤指沿羽支边缘排列的小凸起

来源：
Latin barbula [diminutive of] barba [beard] * see bhardh-3-
拉丁语 barbula [] barba的小后缀 [须] *参见 bhardh-3-