silvertop

noun

plural -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 (such 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: such as

a

: shining gum

b

: spotted gum

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