lay down your arms
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lay down (one's) arms
1. Literally, to lay down one's weapon, as part of a truce, treaty, or surrender. We have you surrounded! Instruct your troops to lay down their arms! We're hoping that the various militant factions in the region will begin laying down their arms if the peace treaty is accepted.
2. By extension, to cease fighting, arguing, or being hostile. We're asking employees to lay down their arms while we investigate this issue. I think we should all just lay down our arms and try to have a calm, rational conversation about this.