sig·net /ˈsɪgnət/
  印,圖章(vt.)蓋章于
  Sig·net n.  A seal; especially, in England, the seal used by the sovereign in sealing private letters and grants that pass by bill under the sign manual; -- called also privy signet.
     I had my father's signet in my purse.   --Shak.
  Signet ring, a ring containing a signet or private seal.
  Writer to the signet Scots Law, a judicial officer who prepares warrants, writs, etc.; originally, a clerk in the office of the secretary of state.
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  signet
       n : a seal (especially one used to mark documents officially)
  Signet
     a seal used to attest documents (Dan. 6:8-10, 12). In 6:17, this
     word properly denotes a ring. The impression of a signet ring on
     fine clay has recently been discovered among the ruins at
     Nineveh. It bears the name and title of an Egyptian king. Two
     actual signet rings of ancient Egyptian monarchs (Cheops and
     Horus) have also been discovered.
       When digging a shaft close to the south wall of the temple
     area, the engineers of the Palestine Exploration Fund, at a
     depth of 12 feet below the surface, came upon a pavement of
     polished stones, formerly one of the streets of the city. Under
     this pavement they found a stratum of 16 feet of concrete, and
     among this concrete, 10 feet down, they found a signet stone
     bearing the inscription, in Old Hebrew characters, "Haggai, son
     of Shebaniah." It has been asked, Might not this be the actual
     seal of Haggai the prophet? We know that he was in Jerusalem
     after the Captivity; and it is somewhat singular that he alone
     of all the minor prophets makes mention of a signet (Hag. 2:23).
     (See SEAL.)