sə̇ˈlu̇rəs, sīˈ- noun
Etymology: New Latin, from Latin, a large river fish, from Greek silouros, from sil- (of unknown origin) + oura tail; akin to Greek orrhos buttocks — more at ass
1. capitalized : the type genus of Siluridae containing the sheatfish and several other Old World catfishes
2. -es : any fish of the genus Silurus