a small, soft creature with a hard, round shell on its back, that moves very slowly and often eats garden plants. Some types of snail can be eaten. 蜗牛 
the war with the slugs and snails in my garden 我与园子里的蛞蝓、蜗牛展开的战斗
Oxford Collocations Dictionaryadjective- edible
- aquatic
- land
- …
- shell
- slugs and snails
- (at) a snail’s pace
Word OriginOld English snæg(e)l, of Germanic origin; related to German Schnecke.
Idioms
at a snail’s pace
very slowly 非常缓慢 Traffic had slowed to a snail’s pace. 车流速度太慢了，像蜗牛在爬。