Interested in Language
May I ask how to interpret this sentence? Thanks.
Literally it means, "It would have to be a very bad wind if it did not do some good to someone."
A: Hurricane X wiped out a few houses.
B: Yes, but it's brought rain to the farmers.
A: True, it's an ill wind that blows no good.
(One could call Hurricane Katrina an "ill wind" perhaps).
Obviously, the figurative meaning applies to things other than winds.
An ill wind
It's an ill wind - Idioms - by the Free Dictionary, Thesaurus and Encyclopedia.