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The Collaborative International Dictionary
Insteep

Insteep \In*steep"\, v. t. [imp. & p. p. Insteeped; p. pr. & vb. n. Insteeping.] To steep or soak; to drench. [R.] ``In gore he lay insteeped.''
--Shak.

Wiktionary
insteep

vb. (context transitive English) To steep or soak; drench.