Synonyms for Trawl (same or very similar meaning)
WordNet sense 1 (a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)):
setline, spiller, trotline, trawl lineWordNet sense 2 (a conical fishnet dragged through the water at great depths):
dragnet, trawl netFrom the ODE community, based on WordNetadd/edit