threk-chö (Tibetan, mkhregs-chod). Literally, ‘cutting through’. One of the two main techniques used in advanced Dzogchen practice. The aim is to help the practitioner cut through the stream of delusive appearances and thoughts by a direct revelation of intrinsic awareness (rig-pa).

A Dictionary of Buddhism, Oxford University Press, 2003, 2004 (which is available in electronic version from answer.com)