Stinging Plant That Is Cured With a Dock Leaf
Puzzle 13 of Winter Wonderland Piece of Cake Pack
Question is: Stinging Plant That Is Cured With a Dock Leaf
and the answer is: NETTLE
Word Meaning:
NETTLE — Any plant whose foliage is covered with stinging, mildly poisonous hairs, causing an instant rash.
Definitions from Wiktionary.