A salmon that has returned to fresh water after a single winter at sea.
- The first grilse of the season was also caught during this period.
- The sort of rod that you'd use for sea trout or grilse should suffice.
- Four grilse were caught at Durkanís Pool, one of 5 lb by a German angler and the rest higher up the river.
Late Middle English: of unknown origin.
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