樹林下的草叢,叢林
Underwood \Un"der*wood`\, n. Small trees and bushes that grow among large trees; coppice; underbrush; -- formerly used in the plural. Shrubs and underwoods look well enough while they grow within the shade of oaks and cedars. --Addison.
underwood n : the brush (small trees and bushes and ferns etc.) growing beneath taller trees in a wood or forest [syn: {underbrush}, {undergrowth}]