函洞

Traditional form:

函洞

Pinyin (reading):

hándòng

Definitions:

• variant of 涵洞 (hándòng)

Characters:

• 函 - correspondence; a case, a box
• 洞 - cave, grotto, hole, ravine

Traditional characters:

• 函 - correspondence; a case, a box
• 洞 - cave, grotto, hole, ravine