The Collaborative International Dictionary of English v.0.48:

bosom \bos"om\, v. t. [imp. & p. p. Bosomed (-[u^]md); p. pr.
   & vb. n. Bosoming.]
   1. To inclose or carry in the bosom; to keep with care; to
      take to heart; to cherish.
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            Bosom up my counsel,
            You'll find it wholesome.             --Shak.
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   2. To conceal; to hide from view; to embosom.
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            To happy convents bosomed deep in vines. --Pope.
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