Ma'anar ƙamus na "base runner" kalma ce da ake amfani da ita a wasan ƙwallon kwando don komawa ga ɗan wasa wanda a halin yanzu yake mamaye ɗaya daga cikin tushe kuma yana ƙoƙarin ci gaba zuwa tushe na gaba, ko dai ta hanyar gudu ko ta zamewa, a matsayin ƙwallon ƙafa. an kafa shi ko an saka shi cikin wasa. Hakanan za a iya amfani da kalmar don yin nuni ga aikin gudu daga wannan tushe zuwa wancan, ko kuma ga ƙwarewar tafiyar da sansanoni yadda ya kamata domin a zura kwallo a raga ko kuma samar da damar zura kwallaye ga ƙungiyar.