splinter
From LSJ
Cicero, Tusculanarum Disputationum, I.45.109
piece torn off: V. θραῦσμα, τό, ἀγή, ἡ.
piece of wreckage: P. and V. ναυάγια, τά.
P. and V. καταγνύναι, Ar. and V. θραύειν (also Plato but rare P.), V. συνθραύειν, ἀγνύναι; see shiver, break.