[n] (Scandinavian folklore) a supernatural creature (either a dwarf or a giant) that is supposed to live in caves or in the mountains
[v] speak or recite rapidly or in a rolling voice
[v] praise or celebrate in song; "All tongues shall troll you"
[v] sing loudly and without inhibition
[v] angle with a hook and line drawn through the water
[v] sing the parts of (a round) in succession
[v] cause to move round and round; "The child trolled her hoop"
[v] circulate, move around