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spiracle

英 ['spaɪrək(ə)l] 美 ['spɪərəkl]

n. [脊椎] 喷水孔；[无脊椎] 气门；呼吸孔

英文词源

spiracle (n.): "air hole," 1610s, from Latin spiraculum "breathing hole," from spirare "to breathe" (see spirit (n.)). Related: Spiracular.