spider mite
noun
1.
any of numerous, variously colored web-spinning mites of the family Tetranychidae, many of which are pests of garden plants and fruit trees.
Origin
1865-70
British Dictionary definitions for
spider mite
spider mite
noun
1.
any of various plant-feeding mites of the family
Tetranychidae,
esp
Panonychus ulmi
(
red spider mite
), which is a serious orchard pest