Chiefly Zoology. The opening or gape of the mouth. Also: the edge of the opening of the mouth; spec. the angle of the mouth.
单词 | θ38724 |
释义 | the world > animals > birds > parts of or bird defined by > [noun] > expanse of mouth (1) rictus1827 Chiefly Zoology. The opening or gape of the mouth. Also: the edge of the opening of the mouth; spec. the angle of the mouth. |
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