We found one dictionary that defines the word asthmaweed:

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1. asthmaweed: Wiktionary

Definitions from Wiktionary (asthmaweed) ▸ noun:  The plant Erigeron bonariensis. ▸ Words similar to asthmaweed ▸ Usage examples for asthmaweed ▸ Idioms related to asthmaweed ▸ Wikipedia articles (New!) ▸ Popular adjectives describing asthmaweed ▸ Words that often appear near asthmaweed ▸ Rhymes of asthmaweed ▸ Invented words related to asthmaweed