grāhya-grāhaka

(Sanskrit). The ‘grasped’ and the ‘grasper’; a Yogācāra term for the duality of a perceiving subject and perceived objects. The school attributes the perception of duality to a false imagining (abhūta-parikalpa) which fabricates and superimposes upon reality the idea of a conscious self which perceives, and the objects which are perceived by it, thus generating saṃsāra.

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