'winter fern' definitions:
Definition of 'winter fern'
From: WordNet
noun
Large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous [syn: hemlock, poison hemlock, poison parsley, California fern, Nebraska fern, winter fern, Conium maculatum]