1. (植物)落叶;(动物)蜕皮
When a plant sloughs its leaves, or an animal such as a snake sloughs its skin, the leaves or skin come off naturally.

相关词组：slough off

1. any outer covering that can be shed or cast off (such as the cast-off skin of a snake)

2. a stagnant swamp (especially as part of a bayou)

3. a hollow filled with mud

4. necrotic tissue
a mortified or gangrenous part or mass

Synonym: gangrenesphacelus