Ma'anar ƙamus na kalmar "gilashin murfin" yana nufin sirara, gilashin bayyananne ko takardar filastik da aka yi amfani da shi don rufe samfurin akan faifan microscope. Hakanan ana kiranta da zamewar murfin, kuma ana amfani dashi don kare samfurin daga ƙura da lalacewa, da kuma hana maƙasudin ruwan tabarau na microscope daga tuntuɓar samfurin kai tsaye. Ana amfani da gilashin murfin sau da yawa a cikin nazarin halittu da dakunan gwaje-gwaje na likita, inda ake amfani da su don shiryawa da kuma bincika samfuran kyallen takarda, sel, da ƙananan ƙwayoyin cuta.