1) A devoted fan of the original Star Trek series from the 1960's.

2) Grok's Spock
"Sally is a trekkie."
by Jamieson Scott June 25, 2005
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A trekkie is an extreme fan of Star Trek, a sci-fi television franchise that has begat 6 TV shows, (The Original Series, The Animated Series, The Next Generation, Voyager, Deep Space 9, and Enterprise) and 11 movies, with 2 more in the making. Some of the more 'treking' trekkies attend star trek conventions, speak Klingon, and collect tons of Star Trek memorabilia. The not-as-intense trekkies are mere fans of extreme devotion, knowing phrases in Klingon and possibly Vulcan (though not fluent), know the actors playing the main roles of each series, and know all the names of the movies. Your standard Trekkie is probably addicted to Star Trek FanFiction. All trekkies have their own opinions on which series was best, but most agree that the two best were the Original Series and the Next Generation.
Wow, that girl is actually wearing a Star Trek Costume. She's a real trekkie.
by startrekgirl.m June 15, 2011
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Anyone that has ever video taped more then 10 episodes of Star Trek for viewing at a later time or belongs to a Star Trek internet message board (STARTREKFANS.NET for example).
You know you are a Trekkie when you tape more then 10 episodes and post messages on (or are a moderator) STARTREKFANS.NET
by Anonymous August 16, 2003
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A person whose primary source of entertainment stems from stuff that didn't really happen. Root comes from the fanatical popularity of the sci-fi show Star Trek.
Dag, why are you so obsessed with that make-believe shit. You stinkin' Trekkie - have you ever even kissed a girl?
by Luanas Malsi August 26, 2005
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A star trek fan that lives at home with it's parents and practises sex by itself fantasing about female characters on the show
by Scorp September 22, 2003
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