Duckwed or Duckweed: How To spell?
The word Duckwed is misspelled against Duckweed, a noun meaning "A genus (Lemna) of small plants, seen floating in great quantity on the surface of stagnant pools fresh water, and supposed to furnish food for ducks; -- called also duckmeat."
Duckweed has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Duckw & d which should not be misspelled with single 'E'
Wrong Spelling:  Duckw-e-d  Correct Spelling:  Duckw-ee-d 
Check more misspelled words of Duckweed to spell it correct.