
1) Big day in Dec 2) Big e-tailing season 3) Big workday for Saint Nick 4) Brief holiday 5) Busy time for Hallmark 6) Christmas 7) Christmas day 8) Dec-25 9) December joy 10) December time 11) December window word 12) Feast day 13) Festive time 14) Fete day 15) Grand opening day 16) Holiday season briefly
Found on
https://www.crosswordclues.com/clue/xmas

1) Noel
Found on
https://www.crosswordclues.com/clue/xmas

Xmas is a common abbreviation of the word Christmas . It is sometimes pronounced s, but it, and variants such as Xtemass, originated as handwriting abbreviations for the typical pronunciation s. The `-mas` part is from the Latin-derived Old English word for Mass, while the `X` comes from the Greek letter Chi, which is the first letter of the G...
Found on
http://en.wikipedia.org/wiki/Xmas

Abbreviation or informal term for Christmas.
Found on
http://www.encyclo.co.uk/local/22423

christmas
Found on
http://www.noslang.com/dictionary/x/

Xmas (Greek) An abbreviation of Christmas. This is one of the oldest informalities of the English language. In its Old English form, it occurs in the Anglo-Saxon Chronicle. The 'X' stands for the Greek letter chi, the initial in the name Xristos (Khristos equals Christ). In Latin manuscripts, Christus was often abbreviated by using the...
Found on
http://www.wordinfo.info/words/index/info/view_unit/3485/

A period of time when security is almost non-existent, when epic sites get cracked and busted (see epic, cracked, busted).
Found on
https://www.versobooks.com/blogs/1715-urban-exploration-a-glossary
No exact match found.