The Collaborative International Dictionary of English v.0.48:

Foreslow \Fore*slow"\, v. t. [See Forslow.]
   To make slow; to hinder; to obstruct. [Obs.] See Forslow,
   v. t.
   [1913 Webster]

         No stream, no wood, no mountain could foreslow
         Their hasty pace.                        --Fairfax.
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The Collaborative International Dictionary of English v.0.48:

Foreslow \Fore*slow"\, v. i.
   To loiter. Same as Forslow. [Obs.]
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The Collaborative International Dictionary of English v.0.48:

Forslow \For*slow"\, v. i.
   To loiter. [Obs.] [Also spelled foreslow.]--Shak.
   [1913 Webster]