资料来源 : Webster's Revised Unabridged Dictionary (1913)

Crewelwork \Crew"el*work`\ (-w?rk`), n.
   Embroidery in crewels, commonly done upon some plain
   material, such as linen.

资料来源 : WordNet®

crewelwork
     n : embroidery done with loosely twisted worsted yarn