English definition of “lay sth down”
lay sth down — Phrasal Verb with lay
/leɪ/ verb (past tense and past participle laid)
MAKE RULES › to officially make new rules, or to officially say how something must be done: The committee has laid down guidelines for future cases.
STOP FIGHTING › If someone lays down their weapons, they stop fighting: It is hoped the two sides will lay down their arms and return to peace.