Boric ____ (4)
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" .)