1. 圆锯齿：crenation 圆锯齿状 | crenature 圆锯齿 | crenelatecrenellate 设炮门
2. 叶缘之钝锯齿状; 钝锯齿间的凹缺 (名)：crenation 圆齿状; 边缘呈圆齿状 (名) | crenature 叶缘之钝锯齿状; 钝锯齿间的凹缺 (名) | crenelation 齿状物; 雉堞 (名)
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noun
1. one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.)