A currick's a bit like a cairn, only built up into a pillar. I've included a picture of one to this site because its so close to some cup-marks.

http://www.themodernantiquarian.com/post/17638

The name "currick" on the map can indicate anything from a natural rock formation to a cairn, though! They're meant to be the sort of drystone pillar featured in that picture, though.

They're a northern thang. Although there's also some to be found in Malta, and at the Burren, Eire.

They're pastoralists' monuments. And a can of worms!