Result from Foreign Dictionaries (2 entries found)
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Unclench \Un*clench"\, v. t.
Same as {Unclinch}.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Unclinch \Un*clinch"\, v. t. [1st pref. un- + clinch.]
To cause to be no longer clinched; to open; as, to unclinch
the fist. [Written also {unclench}.]
[1913 Webster]