Befoul \Be*foul"\, v. t. [imp. & p. p. {Befouled}; p. pr. & vb. n. {Befouling}.] [Cf. AS. bef?lan; pref. be- + f?lan to foul. See {Foul}, a.] 1. To make foul; to soil. [1913 Webster] 2. To entangle or run against so as to impede motion. [1913 Webster]