释义 |
silvertop \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\ noun (-s) 1. : an abnormal condition of various plants marked by whitened patches on the leaves and distortion and dwarfing of growing parts and caused by the feeding of insects or mites: a. : such a condition of cereal and other grasses caused usually by a mite (Sitopteres graminum) b. : a widespread condition of onions caused by the onion thrips 2. or silvertop palmetto a. : a rather small stocky fan palm (Thrinax microcarpa) of southernmost Florida and Cuba that has broad fan-shaped long-petioled leaves pale green above and whitish and tomentose below — called also silver thatch b. : any of various usually low-growing and silvery-leaved palms (as a silver palm) of southern Florida or the West Indies that resemble or are related to the common silvertop 3. : any of several eucalypts: as a. : shining gum b. : spotted gum |