Sentence:  He had looked at the clock many scores of times; and at the street, where the rain was pattering down, and the people as they clinked by in pattens, left long reflections on the shining stone: he <WSD>tattooed</WSD> at the table: he bit his nails most completely ... 
Meaning of the word marked with <WSD> tags:  To tap rhythmically on, to drum.