Since when did WordNet become god? It's just possible that Wordnet could goof, and I'd say they goofed here.

"Realine" gives only 1,860 google hits, which would make it rare indeed.

Even the 1,860 is a huge overstatement: the overwhelming majority are sites written in a foreign tongue. By eyeball guessimate, less than 50 of those hits are not in foreign language, or as proper nouns, or as cites of WordNet. It's the level of usage of a typo, not a word.