ETYM Latin perjurium. Related to Perjure.
Criminal offense of making false statements under oath; SYN. bearing false witness, lying under oath.
The offense of deliberately making a false statement on oath (or affirmation) when appearing as a witness in legal proceedings, on a point material to the question at issue. In Britain and the us it is punishable by a fine, imprisonment, or both.
Faux serment.