Someone told me that they had actually seen this one on a festive poster last week, so welcome to the Christmas 2012 Troublesome Pair!
To slay is to kill in a violent manner. You can also use it in a metaphorical way: “I’m going to slay that demon and face up to the supermarket on Christmas Eve”.
Slay (as a noun) is also an alternative spelling for sley, which is a tool which is used in weaving, to push the weft into place. No, I didn’t know that either, and I’m guessing that the author of the unfortunate poster wasn’t talking about Santa and his weaving activities.
A sleigh is a sledge drawn by reindeer or horses. A sledge is a vehicle set on runners which is used to travel over snow and ice, propelled by gravity downhill or pushed or pulled. Oh, and a sled is a North American term for sledge. Don’t say I don’t give you added value!
Season’s Greetings and I hope you enjoy 2013’s Troublesome Pairs and Trios!
You can find more troublesome pairs here and the index to them all so far is here.
LibroEditing proofreading, editing, transcription, localisation 
Lindsay McLoughlin
December 24, 2012 at 7:08 am
Hi Liz
I enjoyed your lovely – and seasonal – blog. Have a very happy Christmas and best wishes for the new year. Thank you. Lindsay
LikeLike
Liz at Libro
December 24, 2012 at 7:46 am
Thank you, Lindsay! Best wishes for 2013 to you, too!
LikeLike
Rosina Peixoto
December 26, 2012 at 5:09 pm
I came across your blog today and I´m enjoying it. My mother tongue is Spanish and I work on translation so I find your blog extremely helpful. 😀 I wish you good health, happiness, and success in the coming year.
LikeLike
Liz at Libro
December 26, 2012 at 5:22 pm
Thank you for your kind comments, Rosina, and I wish you the same. I’m glad you’re finding my blog useful and enjoyable!
LikeLike