v. t. [ imp. & p. p. Impinged p. pr. & vb. n. Impinging ] [ L. impingere; pref. im- in + pangere to fix, strike; prob. akin to pacisci to agree, contract. See Pact, and cf. Impact. ] To fall or dash against; to touch upon; to strike; to hit; to clash with; -- with on or upon. [ 1913 Webster ] The cause of reflection is not the impinging of light on the solid or impervious parts of bodies. Sir I. Newton. [ 1913 Webster ] But, in the present order of things, not to be employed without impinging on God's justice. Bp. Warburton. [ 1913 Webster ] | 
