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1. A pair of large placards, hinged at the top by straps for hanging over the shoulders with one board in front and the other behind, used for picketing or advertising.
2. A pair of signboards fastened at their tops and separated at their bases to form a freestanding structure, as for sidewalk or roadside advertising.
one of two connected boards, usually bearing advertisements, that are hung over the shoulders in front of and behind a person
two connected signboards hanging in front of and behind a person (sand′wich man`) and bearing some advertisement, notice, or the like.
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|Noun||1.||sandwich board - signboard consisting of two hinged boards that hang front and back from the shoulders of a walker and are used to display advertisements|