The Collaborative International Dictionary of English v.0.48:

Overawe \O`ver*awe"\, v. t. [imp. & p. p. Overawed; p. pr. &
   vb. n. Overawing.]
   To awe exceedingly; to intimidate or subjugate or restrain by
   awe or great fear.
   [1913 Webster]

         The king was present in person to overlook the
         magistrates, and overawe these subjects with the terror
         of his sword.                            --Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

overawe
    v 1: subdue, restrain, or overcome by affecting with a feeling
         of awe; frighten (as with threats) [syn: overawe, cow]