1.
It (a building) [
fell down: or]
became demolished at once, with a vehement noise: (Msb:) and
↓
هَدَّ, aorist
هَدِ3َ
,
it (a wall)
fell down; mentioned by AHei; and also by Es-Semeen, who concedes it; (
MF;) but this form of the verb is commonly known only as transitive. (
TA.)