crabgrass
/ˈkræbgrɑːs/noun
mass noun
1- N. Amer. a creeping grass that can become a serious weed〈北美〉马唐。
1.1
- Digitaria and other genera, family Gramineae: several species, in particular D. sanguinalis and D. ciliaris.禾本科, 马唐属和其他几属： 数种, 尤指马唐和毛马唐。