A member of a group of gastropod molluscs; most species secrete a spiral shell for protection. Some species of snails don't make shells and are known as slugs.
Snail moves slowly, and consequently needs help from others often in order to get around, often by riding on Franklin's shell. Got angry in one episode by Franklin's excessive helping, Snail proved his capability by scaling a tall cliff to gather some crystals for the group.
freshwater or marine or terrestrial gastropod mollusk usually having an external enclosing spiral shell
escargot: edible terrestrial snail usually served in the shell with a sauce of melted butter and garlic
gather snails; "We went snailing in the summer"
The name snail applies to most members of the molluscan class Gastropoda that have coiled shells. Other gastropods, which lack a conspicuous shell, are commonly called slugs, and are scattered throughout groups that primarily include snails. Snails are found in freshwater, marine, and terrestrial environments. While most people are familiar with only terrestrial snails, the majority of snails are not terrestrial. ...
3. 蝸形輪(=snail wheel)
Snail基因的表達產物是一種在上皮-間充質轉分化(epithelial-mesen-chymal transition, EMT)過程中居於重要地位的的轉錄因子。EMT是包括非小細胞肺癌在內的多種腫瘤細胞獲得侵襲轉移能力的重要機制。