A more thorough explanation:

Term: Soit baile aux seigneurs
Definition: Soit baile aux seigneurs means "let it be delivered to the lords" in Law French. It is written on a bill that is sent to the House of Lords.
Example: When a bill is sent to the House of Lords, it may have "soit baile aux seigneurs" written on it, which means that it should be delivered to the lords. This is a way of indicating that the bill is intended for the attention of the House of Lords.