The Collaborative International Dictionary
Overslaugh \O"ver*slaugh`\, n. [D. overslag.]
A bar in a river; as, the overslaugh in the Hudson River.
[Local, U. S.]
--Bartlett.
Overslaugh \O`ver*slaugh"\, v. t. [D. overslaan.] To hinder or stop, as by an overslaugh or an impediment; as, to overslaugh a bill in a legislative body; to overslaugh a military officer, that is, to hinder his promotion or employment. [Local Cant, U. S.]
Wiktionary
n. (context US dialect English) A bar in a river. vb. (context US dialect slang transitive English) To hinder or stop, as by an overslaugh or impediment.
Usage examples of "overslaugh".
History of Illinois, and I know that Judge Douglas will not deny that he was then in favor of overslaughing that decision by the mode of adding five new judges, so as to vote down the four old ones.