Ma'anar ƙamus na "karfe na hanya" yana nufin dakakken dutse ko wasu abubuwa masu ɗorewa waɗanda ake amfani da su don ƙirƙirar ƙaƙƙarfan tushe na hanya ko babbar hanya. Wannan abu yawanci ana yin shi ne da gutsutsutsun dutse ko tsakuwa, kuma galibi ana haɗe shi da wasu kayan kamar yashi, siminti, ko kwalta don ƙirƙirar ƙasa mai tsayi mai ɗorewa. Ana amfani da kalmar “karfe-ƙarfe” sau da yawa a fannin gine-gine ko aikin injiniya, kuma ana iya kiranta da “Tsarin hanya” ko “aggregate.”