1) Cause a collapse 2) Cause to fall 3) Destroy 4) Destroy, old-style 5) Fallen into decay 
• (v. t.) To demolish; to subvert; to destroy; to reduce to poverty; to ruin. • (v. i.) To fall; to tumble. • (v. t.) To cause to fall; to cast down. • (a.) Involved in ruin; ruined.
Ru'in·ate adjective [ Latin ruinatus , past participle ] Involved in ruin; ruined. « My brother Edward lives in pomp and state, I in a mansion here all ruinate .» J. Webster. Ru'in·ate intransitive verb To fall; to tumble. [ Obsolete] Ru'in·ate transitive verb [ Late Latin ruinatus , past participle of ruinare to ruin. See Ruin .] 1. To demolish; to subvert; to destroy; to reduce to poverty; to ruin. « I will not ruinate my f...ther's house.» Shak. « Ruinating...