Usage of the character 堑
qiàn
堑
[塹]
- (bound form) moat; chasm
lùqiàn
路堑
[路塹]
- (civil engineering) cutting (for a railway or highway)
dìqiàn
地堑
[地塹]
- trench, rift valley
qiànháo
堑壕
[塹壕]
- trench; entrenchment
tiānqiàn
天堑
[天塹]
- natural moat
qiànháozhàn
堑壕战
[塹壕戰]
- trench warfare
Dōng Fēidàdìqiàn
东非大地堑
[東非大地塹]
- Great East African rift valley
chīyīqiàn,zhǎngyīzhì
吃一堑，长一智
[吃一塹，長一智]
- Fall into the moat and you'll be wiser next time (idiom); One only learns from one's mistakes.