Ma'anar ƙamus na "ball filin wasa" ball ce da aka ƙera don amfani da ita wajen wasan waje, yawanci girma fiye da ƙwallon ƙafa kuma galibi ana yin ta da roba ko wasu abubuwa masu ɗorewa. Ana amfani da ita a wasanni da ayyuka a wuraren wasa, kamar kickball ko murabba'i huɗu.
