1) Interpose 2) To lay between 
• (v. t.) To lay or place among or between.
In`ter·lay' transitive verb [ imperfect & past participle Interlaid ; present participle & verbal noun Interlaying .] To lay or place among or between. Daniel. 
interlay Related 'together' units: com-; greg-; struct-. Cross references of word families related directly, or indirectly, to: 'internal organs, entrails, inside': ent-; enter-; fistul-; incret-; intra-; splanchn-; viscer-.
to lay between; interpose. · to diversify with something laid between or inserted: to interlay silver with gold.