Whisht - be quite (from the Gaelic Ist - hush)

Crabbit - cross, out of salts

Piece - sandwitch/snack

Play piece - playtime snack

Jilly Piece - Jam Sandwitch

Back of (as in time) - Back of 11 - after 11 o'clock

Wazzack - idiot

Pinkie - little finger

The list is fairly long added to which not only are there generic Scottish ones but there are a host of regional ones too:

In the Angus area you'll come across the mornins nicht - tomorrow night.

Local to me you'll still here the older generation say I'm fair bochk - I'm ill (from the Gaelic bochd) - poor.