Entry 1 sense Webster, 1913 Splintery /(splĭn"tẽr*y̆)/ · Splin·ter·y · IPA /splˈɪntəriː/ 01 a. Consisting of splinters; resembling splinters; as, the splintery fracture of a mineral. 1. Consisting of splinters; resembling splinters; as, the splintery fracture of a mineral.