1
- a small toothed whale with a low triangular dorsal fin and a blunt rounded snout鼠海豚。
1.1
- Family Phocoenidae: three genera and several species, in particular the common (or harbour) porpoise (Phocoena phocoena), of the North Atlantic and North Pacific.鼠海豚科：3属, 数种, 尤指北大西洋和北太平洋中的鼠海豚属。
no obj.
- move through the water like a porpoise, alternately rising above it and submerging（像海豚一样）起伏移动, 颠簸：
the boat began to porpoise badly.
那只船开始剧烈地颠簸起来。
词源
Middle English: from Old French porpois, based on Latin porcus 'pig'+piscis 'fish', rendering earlier porcus marinus 'sea hog'.