凹坑

Traditional form:

凹坑

Pinyin (reading):

āokēng

Definitions:

• concave depression
• crater

Characters:

• 凹 - concave, hollow; depressed; pass, valley
• 坑 - pit, hole; to trap, to bury; to harry

Traditional characters:

• 凹 - concave, hollow; depressed; pass, valley
• 坑 - pit, hole; to trap, to bury; to harry