flan

noun

Etymology: English, from a slip of the tongue by actor Nathan Fillion.

1. A fan of the U.S. TV series Firefly.

   “(some) Firefly flans call themselves Browncoats (Remember, the hot movie from Universal is out this September! :)”

   “For what it's worth, I'm 27 and am a huge Firefly/Serenity flan.”

verb

1. To splay or bevel internally, as a window-pane.