English
fishway
From fish + way.
Proto-Indo-European *piskós
Proto-Germanic *fiskaz
Proto-West Germanic *fisk
Old English fisċ
Middle English fisch ‘an animal that inhabits the water or the meat…’
English fish
Proto-Indo-European *weǵʰ- ‘to bring’
Proto-Germanic *wegaz
Proto-West Germanic *weg ‘way’
Old English weġ
Middle English way
English way
Today it means
noun A structure built on or around dams or locks to facilitate the migration of fish.
Language periods are conventional ranges, not dates for this word.
Etymograph / fishway