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 so the Targum of Jonathan, Jarchi, Ben Gersom, and Maimonides F25:
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.