1) Fish genus 2) Genus silurus 
Silurus is a genus of sheatfishes native to Europe and Asia. There are currently 15 recognized species in this genus: ...
• (n.) A genus of large malacopterygious fishes of the order Siluroidei. They inhabit the inland waters of Europe and Asia.
Si·lu'rus noun [ Latin See Silure .] (Zoology) A genus of large malacopterygious fishes of the order Siluroidei. They inhabit the inland waters of Europe and Asia. 
[n] - type genus of the Siluridae: catfishes
genus Silurus noun type genus of the Siluridae: catfishes