To make invalid. Especially applied to contract law.
To make or declare (an argument, statement, or theory) unsound or erroneous; disprove.
To render invalid; discredit.
To command the attention of.
To attach or fasten parts by using rivets.
To make firm or immovable.
To install rivets.
Any fixed point or certain basis.
A cylindrical mechanical fastener that attaches multiple parts together by fitting through a hole and deforming the head(s) at either end.