adj. great, terrible, good, bad, awesome, awful. A catch-all term originating among elite rock-climbers to describe almost anything. Used with proper inflection to describe meaning, similar to 'bad'
"Dude, that Ford Fiesta is crags."
"Dude, that girl's ass is crags!"
"Crags, that was the last Mountain Dew."
"I was on cragslist and your craggy mom was looking to sell that janky crag she's got for a bag of meth."