The Collaborative International Dictionary of English v.0.48:
Splinterproof \Splin"ter*proof`\ (spl[i^]n"t[~e]r*pr[=oo]f`), a. (Mil.) Proof against the splinters, or fragments, of bursting shells. [1913 Webster]WordNet (r) 3.0 (2006):
splinterproof adj 1: resistant to shattering or splintering; "shatterproof automobile windows" [syn: shatterproof, splinterless, splinterproof]