procumbent
/prəʊˈkʌmbənt/adjective
- Botany (of a plant or stem) growing along the ground without throwing out roots【植】（植物, 茎）爬地的, 匍匐的, 平铺的。
词源
mid 17th cent.: from Latin procumbent- 'falling forwards'，from the verb procumbere,from pro- 'forwards，down'+a verb related to cubare 'to lie'.