Sentence:  He was seeing , <WSD>somehow</WSD> , the face of a young boy , the boy Simms Purdew must once have been , a boy with sorrel hair , and blue eyes dancing with gaiety , and the boy mouth grinning trustfully among the freckles . 
Meaning of the word marked with <WSD> tags:  in some unspecified way or manner; or by some unspecified means