Definition of "flan"

flan¹

/flæn/

noun
plural flans
1. (chiefly UK, Australia) Baked tart with sweet or savoury filling in an open-topped pastry case. (Compare quiche.)
  Quotations
  The menu includes a number of excellent fish dishes such as the […] broccoli flan.
  2004, Shawn Blore, Alexandra de Vries, Frommer's Brazil, page 175
2. (chiefly US, Belize) A dessert of congealed custard, often topped with caramel, especially popular in Spanish-speaking countries.
3. (numismatics) A coin die. (Compare planchet.)

flan²

verb
third-person singular simple present flans, present participle flanning, simple past and past participle flanned
1. (architecture) To splay or bevel internally, as a window-pane.

flan³

/flæn/

noun
plural flans
1. (informal, fandom slang) A fan of the U.S. TV series Firefly.
  Quotations
  (some) Firefly flans call themselves Browncoats (Remember, the hot movie from Universal is out this September! :)
  2005 January 29, P. Burrows, “Re: Name for Lost fans?”, in rec.arts.sf.tv‎ (Usenet)
  For what it's worth, I'm 27 and am a huge Firefly/Serenity flan.
  2006 June 18, Geoff Aldrich, “Re: SciFi promotion [Was Firefly fans skew older?]”, in alt.tv.firefly‎ (Usenet)
  I'm glad this wasn't the first flan group I came across or I would never have realised the great nature of the majority of browncoasts.[sic]
  2007 January 21, Tal, “Re: Nude Jewel Staite? Close enough.”, in alt.tv.firefly‎ (Usenet)