Sentence:  [T]aken very ill in Cheapside—three pennyworth of brandy, and got home to bed at nine, in the <WSD>"doldrums</WSD>". 
Meaning of the word marked with <WSD> tags:  "Usually preceded by" '''(the)''': a state of apathy or lack of interest; a situation where one feels boredom, ennui, or tedium; a state of listlessness or malaise.