Boric ____ (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
acid
(Other definitions for acid that I've seen before include "Battery fluid" , "Etcher's fluid" , "Caustic and biting" , "Substance with pH of less than 7" , "bad rain" .)
I believe the answer is:
acid
(Other definitions for acid that I've seen before include "Battery fluid" , "Etcher's fluid" , "Caustic and biting" , "Substance with pH of less than 7" , "bad rain" .)