An instrument, usually a rubber-tipped rod, for removing solid particles from a container, particularly the walls of that container.
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po·lice·man pə-'lēs-mən n, pl -men -mən an instrument (as a flat piece of rubber on a glass rod) for removing solids from a vessel (as a beaker)
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po·lice·man (pə-lēsґmən) a glass rod with a piece of rubber tubing on one end, used as a stirring rod and transfer tool in chemical analysis.Medical dictionary. 2011.