Sentence:  He was seeing , somehow , 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 <WSD>freckles</WSD> . 
Meaning of the word marked with <WSD> tags:  a small brownish spot (of the pigment melanin) on the skin