1、type genus of the Lepismatidae: silverfish.

2、Any of various wingless insects of the order Thysanura, such as the silverfish, having bristlelike posterior appendages.

3、The Chinese kept tiny fossilized fish in their food stores to keep away insect pests called silverfish .

4、Any of various insects, especially booklice and silverfish, that infest books and feed on the paste in the bindings.

5、A small, wingless insect(Thermobia domestica) related to the silverfish and inhabiting warm areas of buildings, as around furnaces or boilers.