Definition (full): to jump, be violently agitated, to terrify, shake off, untie
Strong's Exhaustive Concordance
A primitive root; to jump, i.e. Be violently agitated; causatively, to terrify, shake off, untie -- drive asunder, leap, (let) loose, X make, move, undo.
KJV: Yet these may ye eat of every flying creeping thing that goeth upon all four, which have legs above their feet, to leap withal upon the earth;
NASB: Yet these you may eat among all the winged insects which walk on all fours: those which have above their feet jointed legs with which to jump on the earth.