Nim·ble a. [Compar. Nimbler superl. Nimblest ]  Light and quick in motion; moving with ease and celerity; lively; swift.
     Through the mid seas the nimble pinnace sails.   --Pope.
  Note: ☞ Nimble is sometimes used in the formation of self-explaining compounds; as, nimble-footed, nimble-pinioned, nimble-winged, etc.
  Nimble Will Bot., a slender, branching, American grass (Muhlenbergia diffusa), of some repute for grazing purposes in the Mississippi valley.
  Syn: -- Agile; quick; active; brisk; lively; prompt.
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  Slough n.
  1. A place of deep mud or mire; a hole full of mire.
     He's here stuck in a slough.   --Milton.
  2. A wet place; a swale; a side channel or inlet from a river.
  Note: [In this sense local or provincial; also spelt sloo, and slue.]
  Slough grass Bot., a name in the Mississippi valley for grasses of the genus Muhlenbergia; -- called also drop seed, and nimble Will.
  nimble Will
       n : slender branching American grass of some value for grazing
           in central United States [syn: nimblewill, Muhlenbergia
           schreberi]