'Hogweed' definitions:

Definition of 'hogweed'

(from WordNet)
noun
Tall coarse plant having thick stems and cluster of white to purple flowers [syn: cow parsnip, hogweed, Heracleum sphondylium]

Definition of 'Hogweed'

From: GCIDE
  • Hogweed \Hog"weed`\, n. (Bot.) (a) A common weed (Ambrosia artemisi[ae]ge). See Ambrosia, 3. (b) In England, the Heracleum Sphondylium. [1913 Webster]