All fowls that creep,.... Or rather "every creeping thing that flies"; for what are designed are not properly fowls, but, as the Jewish writers interpret them, flies, fleas, bees, wasps, hornets, locusts, &c.
so the Targum of Jonathan, Jarchi, Ben Gersom, and Maimonides :going upon [all] four; that is, upon their four feet, when they walk or creep:[these shall be] an abomination to you; not used as food, but detested as such.
Maacolot Asurot, c. 2. l.