1. Plural of cisco; small freshwater fish of the salmon family found in North American lakes.
Usage: Also called lake herring or tullibee in some regions.

Examples

• The ciscos in Lake Michigan are an important food source for larger fish.
• Anglers often catch ciscos while fishing in the Great Lakes.
• Ciscos are known for their silvery appearance and small size.
• The population of ciscos has fluctuated due to invasive species.
• Commercial fisheries have historically harvested ciscos for food.