(i) Bottom trawl means a trawl in which the otter boards or the footrope of the net are in contact with the seabed. It includes demersal seine gear, and pair trawls fished on the bottom. Any trawl not meeting the requirements for a midwater trawl in 660.130(b), subpart D is a bottom trawl.
50 CFR § 660.11
These definitions are specific to the fisheries covered in subparts C through G of this part.