godan verb (-su)
dislocate one's back; throw out one's back
Literal physical injury: the back or hip joint is dislocated or severely strained, making it impossible to stand. Often used in the expression 腰を抜かす.
See also: 腰を抜かす
突然の大きな音に腰抜かした。
I was so startled by the sudden loud noise that my legs gave out.
godan verb (-su)
be unable to stand from fear or surprise; lose one's legs
Figurative use: so shocked or frightened that one's legs give out and one cannot stand. Often used in the expression 腰を抜かす.
突然の大きな音に驚いて腰を抜かした。
I was so startled by the sudden loud noise that my legs gave out.