Mahamudra

Mahāmudrā (Sanskrit; Tibetan: Chagchen, Wylie: phyag chen, contraction of Chagya Chenpo, Wylie: phyag rgya chen po) literally means "great seal" or "great symbol." It "is a multivalent term of great importance in later Indian Buddhism and Tibetan Buddhism" which "also occurs occasionally in Hindu and East Asian Buddhist esotericism."