a fishing net which hangs vertically in the water with floats at the top and weights at the bottom edge, the ends being drawn together to encircle the fish
a seine boat
fish (an area) with a seine
the fishermen then seine the weir
a river of northern France. Rising north of Dijon, it flows north-westwards for 761 km (473 miles), through the cities of Troyes and Paris to the English Channel near Le Havre