Percussing

from The Collaborative International Dictionary of English v.0.48
Percuss \Per*cuss"\ (p[~e]r*k[u^]s"), v. t. [imp. & p. p.
   {Percussed}; p. pr. & vb. n. {Percussing}.] [L. percussus, p.
   p. of percutere; per + quatere to shake, strike. See
   {Quash}.]
   To strike smartly; to strike upon or against; as, to percuss
   the chest in medical examination.
   [1913 Webster]

         Flame percussed by air giveth a noise.   --Bacon.
   [1913 Webster]
    

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