Sentence:  I observed, indeed, that the present war had filled the church with many of these uninhabited monuments, which had been erected to the memory of persons whose bodies were perhaps buried in the plains of "Blenheim", or in the <WSD>bosom</WSD> of the ocean. 
Meaning of the word marked with <WSD> tags:  Any thing or place resembling the breast; a supporting surface; an inner recess; the interior.