correspondence; a case; a box · · · correspondence; a case; a box · · Code (Short Name / Abbr) correspondence; a case; a box · · Long Name 3 · · Number of Characters Definition · · Property Characters · 函 cjk unified ideograph | correspondence; a case; a box U+51FD 凾 cjk unified ideograph | correspondence; a case; a box U+51FE 圅 cjk unified ideograph | correspondence; a case; a box U+5705