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Webster 1913 Edition

Verb.

[1st pref.

un-

head

To take out the head of;

as, to

unhead

a cask

To decapitate; to behead.

[Obs.]

T. Brown.

Verb.

unhed'. To take out the head of; as, to unhead a cask.

unhead ‎(third-person singular simple present unheads, present participle unheading, simple past and past participle unheaded)