埋线 Traditional form: 埋線 Pinyin (reading): máixiàn Definitions: sunken cord (used in bookbinding) Characters: 埋 - to bury; to conceal; to plant 线 - line, thread, wire; clue, trail Traditional characters: 埋 - to bury; to conceal; to plant 線 - line, thread, wire; clue, trail