Basic Guidelines For English Spellings
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1The larva of the puss moth, Cerura vinula.
2US The larva of the moth Megalopyge opercularis (family Megalopygidae), of the south-eastern United States, which is covered with long silky hairs that conceal stinging hairs; (also, more fully "puss caterpillar moth") the moth itself.
Mid 19th century.