used in 洪洞[Hong2 tong2] (the name of a place in Shanxi)

cave; cavern

insight

see 洞口縣|洞口县[Dong4 kou3 Xian4]

cave mouth; tunnel entrance

secret inner room; bridal room

to see clearly

to clearly understand

a cave

paradise; heavenly or beautiful place; fairyland

see 洞頭區|洞头区[Dong4 tou2 Qu1]

cave; pit; (coll.) greenhouse

hole

cave dwelling; legendary abode of immortals

to be wide open

lienteric diarrhea (TCM)

to penetrate; to pierce; to see clearly; to have an insight into

olm (Proteus anguinus)

insight; to see clearly

to examine deeply; to inspect closely

Dongkou, a county in Shaoyang City 邵陽市|邵阳市[Shao4 yang2 Shi4], Hunan

Dongtou, a district of Wenzhou City 溫州市|温州市[Wen1 zhou1 Shi4], Zhejiang

Dongting Lake in northeast Hunan province

Crocs shoes (or any similar shoe)

to see everything clearly

bridal room and ornamented candles; wedding festivities (idiom)

lit. to see sth as clearly as one sees a blazing fire (idiom); fig. to grasp the situation thoroughly

wedding night