Sentence:  Have you no longing ever to be free? / In warm, electric days to run a-muck, / Ranging like some mad dinosaur, / Your fiery heart at war / With this strange world, the city's restless ruck, / Where all <WSD>drab</WSD> things that toil, save you alone, / Have life; [...] 
Meaning of the word marked with <WSD> tags:  "Particularly of colour": dull, uninteresting.