brda yig

བརྡ་ཡིག
1) brda'i shastra; 2) responding letter; 3) extraordinary kind of writing, sign script, code letters, symbolic writing, magic words; 4) written notice [IW]

sign script, symbolic letters [RY]

symbolic letters, symbolic script [JV]

symbolic script (dakini writing); sign script, code letters, symbolic writing [RY]