tadpole
/ˈtædpəʊl/noun
- the tailed aquatic larva of an amphibian (frog, toad, newt, or salamander), breathing through gills and lacking legs until its later stages of development蝌蚪。
词源
late 15th cent.: from Old English tāda 'toad' + POLL (probably because the tadpole seems to consist of a large head and a tail in its early development stage).