Definify.com

Webster 1913 Edition

Verb.

[See

To seal; to confirm, as by a seal or stamp.

[Obs.]

Bradford.

obsign ‎(third-person singular simple present obsigns, present participle obsigning, simple past and past participle obsigned)

(obsolete) To seal; to confirm, as by a seal or stamp.
- John Bradford
  He willeth us to eat of the bread […] and drink of that cup all, […] that is, take it as the sacrament of his body and blood […] whereby he doth represent, and to our faith give and obsign unto us, himself wholly, with all the merits and glory of his body and blood.