He runneth
ruwts (roots)
to run (for whatever reason, especially to rush) -- break down, divide speedily, footman, guard, bring hastily, (make) run (away, through), post.
upon him even on his neck
tsavva'r (tsav-vawr')
in the sense of binding; the back of the neck (as that on which burdens are bound) -- neck.
upon the thick
`abiy (ab-ee')
density, i.e. depth or width -- thick(-ness).
bosses
gab (gab)
from an unused root meaning to hollow or curve; the back (as rounded); by analogy, the top or rim, a boss, a vault, arch of eye, bulwarks, etc.
of his bucklers
magen (maw-gane')
a shield (i.e. the small one or buckler); figuratively, a protector; also the scaly hide of the crocodile -- armed, buckler, defence, ruler, + scale, shield.