The Collaborative International Dictionary of English v.0.48:

Coffin \Cof"fin\ (?; 115), n. [OE., a basket, receptacle, OF.
   cofin, fr. L. cophinus. See Coffer, n.]
   1. The case in which a dead human body is inclosed for
      burial.
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            They embalmed him [Joseph], and he was put in a
            coffin.                               --Gen. 1. 26.
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   2. A basket. [Obs.] --Wyclif (matt. xiv. 20).
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   3. A casing or crust, or a mold, of pastry, as for a pie.
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            Of the paste a coffin I will rear.    --Shak.
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   4. A conical paper bag, used by grocers. [Obs.] --Nares.
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   5. (Far.) The hollow crust or hoof of a horse's foot, below
      the coronet, in which is the coffin bone.
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   Coffin bone, the foot bone of the horse and allied animals,
      inclosed within the hoof, and corresponding to the third
      phalanx of the middle finger, or toe, of most mammals.

   Coffin joint, the joint next above the coffin bone.
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The Collaborative International Dictionary of English v.0.48:

Coffin \Cof"fin\, v. t. [imp. & p. p. Coffined; p. pr. & vb.
   n. Coffining.]
   To inclose in, or as in, a coffin.
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         Would'st thou have laughed, had I come coffined home?
                                                  --Shak.
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         Devotion is not coffined in a cell.      --John Hall
                                                  (1646).
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WordNet (r) 3.0 (2006):

coffin
    n 1: box in which a corpse is buried or cremated [syn: coffin,
         casket]
    v 1: place into a coffin; "her body was coffined"

Easton's 1897 Bible Dictionary:

Coffin
   used in Gen. 50:26 with reference to the burial of Joseph. Here,
   it means a mummy-chest. The same Hebrew word is rendered "chest"
   in 2 Kings 12:9, 10.