I wanted to add that the little triplet common in Irish, Scottish but used especially in Cape Breton fiddling is called 'cut' by some people, as well as a triplet. Although in some fiddle books Ive seen a cut refer to what is essentially a grace note.

I think Liz Carrol calls them 'crunchies'

Tommy Peoples throws them in all over the place, in fact one of my friends (not a fiddle player) thought the disk was skipping when she heard a Tommy Peoples cd.

another interesting term; which is probably scottish (came from a scottish fiddle band leader) is the term 'Hing' which refers to the extra accent and delay added to the first note in jig triplets. daa da da, daa da da petr