Yes, Mary- foolish, silly, thoughtless. You can find it in the Oxford English Dictionary (my favorite) as well as You-tube. Here's just one of the links Mr. Google offers, with a bit of the probable origin of the word discussed:

http://www.word-detective.com/2007/06/08/glaikit/


I expect that glaikit could apply to me more often than Megan or Giok will admit, kind folk that they are. It's a condition I strive to avoid, however and not one I would particularly associate with the Scots of my acquaintance.