crithir1, f. (gs. -thre, pl. -threacha).1. Spark. (a) (Of fire) ~ thine, lasrach, spark of fire, of flame. (b) (Of intelligence) Is beag an chrithir atá ann, he is not very bright. ~ agus cruinneas, brightness and coherence; wit and sense. 2. Particle; powdered matter. ~ chró, particle of blood. Tá an chré ina ~, the earth is powdery, very fine. ~ de luaithreach, sprinkling of ashes. 3. Vet:~ fola, braxy (in sheep).