How do you pronounce 堵?

Q: How do you pronounce 堵? A: dou2, e.g.

堵 (dou2) — meaning, pronunciation, examples

堵 (dou2, dǔ) — to stop up; (to feel) stifled or suffocated; wall; classifier for walls

堵截 (dou2 zit6) — to intercept; to cut off
堵 (ze2) — part of a place name
堵住 (dou2 zyu6) — to block up
堵塞 (dou2 sak1) — to clog up; blockage
堵塞費 (dou2 sak1 fai3) — traffic congestion fee
堵床上 (dou2 cong4 soeng6) — (coll.) to catch an adulterous couple in the act