Ma'anar ƙamus na kalmar "borer" kayan aiki ne ko kwari da ke toshe ramuka ko ramuka a cikin itace, tsire-tsire, ko wasu kayan aiki. Silindrical ko conical siffar da ake amfani da su don ƙirƙirar ramuka ko buɗa ta cikin wani abu kamar itace, ƙarfe, ko dutse. tsire-tsire, galibi suna haifar da lalacewa ga shuka ko itace.
