The Collaborative International Dictionary
foreslow
Forslow \For*slow"\, v. i.
To loiter. [Obs.] [Also spelled foreslow.]
--Shak.
Wiktionary
foreslow
vb. 1 (context obsolete intransitive English) To be slow or tardy; to slow down. 2 (context obsolete transitive English) To slow, hinder, delay, impede.