hyperaspist

from The Collaborative International Dictionary of English v.0.48

Hyperaspist \Hy`per*as"pist\, n. [Gr. ?, fr. ? to cover with a
   shield; "ype`r over + ? shield.]
   One who holds a shield over another; hence, a defender.
   [Obs.] --Chillingworth.
   [1913 Webster]