A particular kind of tartan hold-all, made exclusive under licence for British Airways. When waiting to collect your luggage from an airport conveyour belt, you will notice that on the next consingle, solitary bag going round and round uncollected. This is a glentaggart, which has been placed there by the baggage-handling staff to take your mind off the fact that your own luggage will shortly be landing in Murmansk.
See Adlestrop, Aird of Sleat, Glentaggart, Hever.
source : The Meaning of Liff