coat of arms — The coat of arms of a family, town, or organization is a special design in the form of a shield that they use as a symbol of their identity.
order arms — (in the manual of arms in close-order drill) a position in which the rifle is held at the right side, with its butt on the ground.
take up arms — Usually, arms. weapons, especially firearms.
Four-or-more syllable rhymes
sergeant at arms — an executive officer of a legislative or other body, whose duty it is to enforce its commands, preserve order, etc.
