From Longman Business Dictionary
caveat emptorcaveat emp·tor /ˌkæviæt ˈemptɔː, ˌkeɪ--tɔːr/ noun [uncountableU]LAWCOMMERCE a phrase meaning ‘let the buyer beware’, used to say that it is the buyer’s responsibility to find out any problems with goods before buying them, and it is not the seller’s responsibility to tell the buyer about themIn the sale of property, the rule ‘caveat emptor’ generally applies.