
1) American erotic novel 2) American fantasy novel 3) Astronomical rarity 4) Awfully long time 5) Cuisine of Minnesota 6) Dedicated deck card game 7) Exclusively Saxon word 8) Exclusively Anglo word 9) Fantasy Flight Games game 10) Flavor of ice cream 11) Long time 12) Metaphor for uncommonness 13) Molson Coors brand
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https://www.crosswordclues.com/clue/blue-moon
[beer] Blue Moon Belgian White is a Belgian-style witbier brewed by Blue Moon Brewing Co. originally in Golden, Colorado, that was launched in 1995. Blue Moon Brewing Co. is a part of Tenth and Blake Beer Company, the craft and import division of Chicago-based MillerCoors. In Canada, Blue Moon Belgian White is marketed as the beer Rickard`s...
Found on
http://en.wikipedia.org/wiki/Blue_Moon_(beer)
[game] Blue Moon, published by Kosmos/Fantasy Flight Games from 2004, is Reiner Knizia`s most successful take on the collectible card game (CCG) genre. It is a card game for two players that bears some resemblance to the well-known Magic: The Gathering (by Richard Garfield), although the game mechanics are quite different. However Blue Moon...
Found on
http://en.wikipedia.org/wiki/Blue_Moon_(game)
[ice cream] Blue Moon is an ice cream flavor with bright blue coloring available in the Upper Midwest of the United States. The Chicago Tribune has described the ice cream as `Smurf-blue, marshmallow-sweet, and tasting remarkably like Froot Loops and Fruity Pebbles`. Blue Moon ice cream is one of the flavors which make up Superman ice cream...
Found on
http://en.wikipedia.org/wiki/Blue_Moon_(ice_cream)

A blue moon is an extra full moon that appears in a subdivision of a year, either the third of four full moons in a season or, recently, a second full moon in a month of the common calendar. Metaphorically, a `blue moon` is a rare event, as in the expression `once in a blue moon`. The phrase has nothing to do with the actual color of the moon,...
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http://en.wikipedia.org/wiki/Blue_moon

• The second full moon in a month that has two full moons. • The third full moon in a season of the year that has four full moons (usually each season has only three full moons.)
Found on
http://www.daviddarling.info/encyclopedia/B/blue_moon.html

The second Full Moon of any month. A cycle of Lunar Phases (a Lunation)is completed in approximately 29.5 days so any month except February can have a Blue Moon. Typically, a Blue Moon occurs roughly every two and a half years, hence the expression 'Once in a Blue Moon'.
Found on
http://www.encyclo.co.uk/local/20448

Blue moon is London Cockney rhyming slang for spoon.
Found on
http://www.probertencyclopaedia.com/browse/ZB.HTM

Traditionally, something that happens rarely or never. More recently, this has come to mean the second full Moon in a single calendar month.
Found on
http://www.skyandtelescope.com/astronomy-terms/

[
n] - (informal) a long time
Found on
http://www.webdictionary.co.uk/definition.php?query=blue%20moon
noun a long time; `something that happens once in blue moon almost never happens`
Found on
https://www.encyclo.co.uk/local/20974

moon (def. 9).
Found on
https://www.infoplease.com/dictionary/blue-moon

a long time
Found on
https://www.vocabulary.com/lists/1594491
No exact match found.