Definition of "darter"

One who darts, or who throws darts; that which darts.  examples

Any member of the family Anhingidae, waterbirds with long necks.  quotations  examples

Any of various darting freshwater fish of the family Percidae, that are usually small and brightly coloured and are native to North America.  examples

Any of the similar South American (and Panamanian) freshwater fish in the characin family Crenuchidae  examples

(UK) Any of the dragonflies in the genus Sympetrum  examples

Any of various hesperiid butterflies of the genera Arrhenes and Telicota.  examples