cast net noun 1cast-net verb 1forms 4 noun1 •A (usually weighted) fishing net that is thrown and then pulled back by means of an attached line. cast-net verb1 •To throw a weighted fishing net and then pull it back by means of an attached line.With regard to barbel, the last direction for chub is a very important one; hundreds of barbel are caught when of mere gudgeon size, either when raking for gudgeon or cast-netting for bait. — 1883 formscast-netted · cast-netting · cast-nets · cast nets