What does "untruss" mean?

Untruss: To loose from a truss, or as from a truss; to untie or unfasten; to let out; to undress. [R.] Dryden.

Additional senses

  1. 2.One who untrussed persons for the purpose of flogging them; a public whipper. [Obs.] B. Jonson.

Sources