sandblast Syllabification: (sand·blast)Pronunciation: /ˈsan(d)ˌblast/Translate sandblast | into Italian Definition of sandblast verb [with object] roughen or clean (a surface) with a jet of sand driven by compressed air or steam. noun a jet of sand used in sandblasting. Derivatives sandblaster noun sandblast in other Oxford dictionaries Definition of sandblast in the British & World English dictionary