HAV'OCK, noun Waste; devastation; wide and general destruction. Ye gods! what havock does ambition make Among your works.--Addison As for Saul, he made havock of the church. Acts 8:3. HAV'OCK, verb transitive To waste; to destroy; to lay waste. To waste and havock yonder world.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI