A "Load Trail 14' Gooseneck High Side Dump 2019" refers to a 2019 model dump trailer manufactured by Load Trail, featuring a gooseneck design, a 14-foot bed length, and high side walls, meaning it can hold a larger volume of material compared to a standard dump trailer with lower sides; essentially, it's a heavy-duty, high-capacity dump trailer with a gooseneck hitch for towing behind a truck.