Ma'anar ƙamus na kalmar "naman gwangwani" tana nufin kowane nau'in nama da aka adana kuma aka adana a cikin gwangwani. Wannan na iya haɗawa da nau'ikan nama daban-daban, kamar naman sa, kaza, naman alade, ko kifi, waɗanda aka dafa, da ɗanɗano, sannan a rufe a cikin gwangwani don hana lalacewa. Ana amfani da naman gwangwani sau da yawa azaman tushen abinci mai dacewa kuma mai dorewa don tafiye-tafiyen zango, rabon gaggawa, ko kuma cikin yanayin da ba a samun firji. Duk da haka, yana da mahimmanci a lura cewa wasu nau'in naman gwangwani na iya zama mai yawa a cikin sodium ko wasu abubuwan kiyayewa, kuma maiyuwa ba su da lafiya kamar sabo ko daskararre.