Sentence:  No, this is not a disentanglement from, but a progressive "knotting into" — they go in under archways, secret entrances of rotted concrete that only looked like loops of an underpass... certain trestles of blackened wood have moved slowly by overhead, and the smells begun of coal from days far to the past, smells of <WSD>naphtha</WSD> winters, of Sundays when no traffic came through... 
Meaning of the word marked with <WSD> tags:  Any of a wide variety of aliphatic or aromatic liquid hydrocarbon mixtures distilled from petroleum or coal tar, especially as used in solvents or petrol.