洞:

1. 골 동 (gol dong) -- valley, village.

• 洞 (동) a dong (administrative unit)
• 洞事務所 (동사무소) a dong office
• 洞口 (동구) the entrance to a village

2. 밝을 통 (balgeul tong) -- bright.

See also: 村, 里, 坊, 閭, 府, 邨, 署, 衙, 閻