Definition of silvertop
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 (such as a silver palm) of southern Florida or the West Indies that resemble or are related to the common silvertop
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up silvertop? Please tell us where you read or heard it (including the quote, if possible).