顶门眼 (頂門眼) dǐngmén yǎn

dǐngmén yǎn set phrase forehead eye
Domain: Buddhism 佛教 , Subdomain: Chan School
Notes: An eye in the forehead of a Maheśvara (Ding '頂門眼'; FGDB '頂門眼'; SH '頂門眼')