The Collaborative International Dictionary of English v.0.48:

Kendal green \Ken"dal green`\, or Kendal \Ken"dal\
   A cloth colored green by dye obtained from the woad-waxen,
   formerly used by Flemish weavers at Kendal, in Westmoreland,
   England. --J. Smith (Dict. Econ. Plants).
   [1913 Webster]

         How couldst thou know these men in Kendal green ?
                                                  --Shak.
   [1913 Webster] Kennedia

WordNet (r) 3.0 (2006):

Kendal
    n 1: a green dye, often used to color cloth, which is obtained
         from the woad plant [syn: Kendal green, Kendal]