The Collaborative International Dictionary
Untrusser
Untruss \Un*truss"\, Untrusser \Un*truss"er\, n.
One who untrussed persons for the purpose of flogging them; a
public whipper. [Obs.]
--B. Jonson.
Wiktionary
untrusser
n. (context obsolete English) One who untrussed persons for the purpose of flogging them; a public whipper.