(Scandanavian folklore) a supernatural creature (either a dwarf or a giant) that is supposed to live in caves or in the mountains
a partsong in which voices follow each other; one voice starts and others join in one after another until all are singing different parts of the song at the same time; round
they enjoyed singing rounds
a fisherman's lure that is used in trolling
he used a spinner as his troll
angling by drawing a baited line through the water; trolling
v.
circulate, move around
cause to move round and round
The child trolled her hoop
sing the parts of (a round) in succession
angle with a hook and line drawn through the water
sing loudly and without inhibition
praise or celebrate in song
All tongues shall troll you
speak or recite rapidly or in a rolling voice
Microsoft Computer Dictionary
vb. To post a message in a newsgroup or other online conference in the hopes that somebody else will consider the original message so outrageous that it demands a heated reply. A classic example of trolling is an article in favor of torturing cats posted in a pet lovers’ newsgroup. See also YHBT.