Caveat lector is a Latin phrase meaning "Let the reader beware." Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ...
The phrase is used in written English in two distinct ways. The English language is a West Germanic language that originates in England. ...
First, a writer may employ the phrase to warn a reader that what he has just read, or is about to read, may be false or deficient in some way. The writer is at pains here to ensure the reader knows the possible problems in the work.
Second, an author may use the phrase before issuing a general warning to the reader relating to the content of the piece, rather than the written details themselves.
Examples
(first meaning) "XYZ store, at 1600 Main Street, said in the newspaper they are selling scooters for only $9.99. Caveat lector—the print was smudged and I may have got the address details wrong."
(second meaning) "XYZ store said in the newspaper they're selling scooters for only $9.99. Caveat lector—they don't mention that you have to pay extra for the wheels."
Caveat Lector is also the name of a Liberal Webcomic
A formal notice or warning given by an interested party to a court, judge, or ministerial officer in opposition to certain acts within his or her power and jurisdiction.
Originally, a caveat was a document that could be served on either a judge or a public official to give him or her notice that he or she should discontinue a certain proceeding until an opposing party was given an opportunity to be heard.
Used in the past by someone objecting to the appointment of an executor or administrator of an estate or to the granting of a patent for an invention, the term caveat is rarely used by modern attorneys.