Compositional etymology which is formally rather economical, implying only one formal manipulation, the change of the aspirate [kh] into a non aspirate [k]. However, from the semantic point of view, it is surprising that the wineskin be etymologized as "not holding", unless we assume that it refers to Aeolus' wineskin from which the winds escape in the Odyssey. Choeroboscus may have misunderstood an older explanation where the ἀ- was not the privative alpha, but the "intensive" alpha, since for Greek scholars both were one and the same: in that case the etymology would be "the containing one", which is a functional etymology fit for a wineskin. Alternatively, Choeroboscus did not understand that the σχῶ mentioned in his source (see Etym. Genuinum in the Parallels) is not ἔχω " to have" but the "preform" of σχίζω in Philoxenus' theory. The testimony of the Etym. Genuinum and the Etym. Magnum after it (see Parallels) are ambiguous: either they mix two different etymologies (σχίζω and ἔχω) or they understand σχῶ as the preform of σχίζω and they have only one etymology.