troll
/trəul; trol/ v[I, Ipr]
~ (for sth) fish with a rod and line by pulling bait through the water behind a boat （在船後用杆和绳）拖饵钓鱼
trolling for pike 拖钓狗鱼.
troll / trəul; trol/ n (in Scandinavian myths) evil giant or mischievous but friendly dwarf （斯堪的那维亚神话中的）山精（邪恶的巨怪或顽皮的侏儒）.