| 堵 |
dǔ sè | to clog up / blockage |
| 堵 |
dǔ | to block up (a road, pipe etc) / to stop up (a hole) / (fig.) (of a person) choked up with anxiety or stress / wall (literary) / (classifier for walls) |
| 塞 |
sāi | to plug; to stop up; to stuff in / (bound form) a stopper; a cork |
| 塞 |
sài | (bound form) strategic stronghold |
| 塞 |
sè | (bound form) to block; to obstruct |