Caught or fished using a gillnet, or the past tense of to gillnet.
From gillnet (noun) + -ed (past tense suffix). Created by converting the noun 'gillnet' into a verb and applying standard English past tense formation.
The word shows how English adapts fishing terminology—fishermen invented the technique, then the language adapted to describe it, turning a tool into both a verb and a record of human impact on ocean life.
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