An Arctic cisco (fish) of a variety which occurs in Irish lakes.
（爱尔兰）秋白鲑
Example sentencesExamples
Pollan in Ireland are a relatively short-lived fish, with most authors (e.g. Twomey 1956; Wilson and Pitcher 1983) encountering fish of up to five years old.
The three species of endangered fishes are allis shad, Killarney shad and pollan.
In total Noel had about 11 good runs and landed two - both caught with pollan dead bait.
Origin
Early 18th century: from Irish pollán, perhaps based on poll 'pool'.