We found one dictionary that defines the word billygoatweed:

General (1 matching dictionary)

1. billygoatweed: Wiktionary

Definitions from Wiktionary (billygoatweed) ▸ noun:  Synonym of goatweed ▸ Words similar to billygoatweed ▸ Usage examples for billygoatweed ▸ Idioms related to billygoatweed ▸ Wikipedia articles (New!) ▸ Popular adjectives describing billygoatweed ▸ Words that often appear near billygoatweed ▸ Rhymes of billygoatweed ▸ Invented words related to billygoatweed