dandelion
Concise Oxford English Dictionary © 2008 Oxford University Press:
dandelion/ˈdandɪlʌɪən/
▶noun a widely distributed weed of the daisy family, with large bright yellow flowers followed by globular heads of seeds with downy tufts. [Taraxacum officinale and related species.]
– origin ME: from Fr. dent-de-lion ‘lion's tooth’ (because of the jagged shape of the leaves).
'dandelion' also found in these Oxford entries:

