The Collaborative International Dictionary of English v.0.48:

Interlard \In`ter*lard"\, v. t. [imp. & p. p. Interlarded; p.
   pr. & vb. n. Interlarding.] [F. entrelarder. See Inter-,
   and Lard.]
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   1. To place lard or bacon amongst; to mix, as fat meat with
      lean. [Obs.]
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            Whose grain doth rise in flakes, with fatness
            interlarded.                          --Drayton.
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   2. Hence: To insert between; to mix or mingle; especially, to
      introduce that which is foreign or irrelevant; as, to
      interlard a conversation with oaths or allusions.
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            The English laws . . . [were] mingled and
            interlarded with many particular laws of their own.
                                                  --Sir M. Hale.
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            They interlard their native drinks with choice
            Of strongest brandy.                  --J. Philips.
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