The Collaborative International Dictionary
bultow
Spillet fishing \Spil"let fish`ing\, Spilliard fishing \Spil"liard fish`ing\, A system or method of fishing by means of a number of hooks set on snoods all on one line; -- in North America, called trawl fishing, bultow, or bultow fishing, and long-line fishing.
Wiktionary
bultow
n. 1 A trawl; a boulter. 2 The mode of fishing with a boulter or spiller.