What do the names of Santas reindeers Donner and Blitzen mean?

Answer 1

Two of the reindeer names, Donner/Donder and Blitzen, are often the source of confusion, misspelling, and misinformation. The short facts are these: Donner/Donder and Blitzen were named ''Dunder'' and ''Blixem'' (the Dutch words for ''thunder'' and ''lightning'') in the original printing of "A Visit From St. Nicholas." In reprints of the poem, the names became ''Donder'' and ''Blixen,'' then ''Donder'' and ''Blitzen'' (the latter being German for ''lightning''). By the time Johnny Marks wrote "Rudolph," it was ''Donner'' and ''Blitzen'' (possibly because ''Donder'' was musically awkward). See Snopes.com for a thorough discussion.