(noun plural) a spell of listlessness or despondency / (noun plural) a part of the ocean near the equator abounding in calms, squalls, and light shifting winds / (noun plural) a state or period of inactivity, stagnation, or slump
John Maynard Keynyes, back in 1936, had to quote Ibsen's Wild Duck in order to convey to his reader the problem that a central bank faces when interest rates fall to zero but the economy is still in the doldrums