Teff is a 4 letter English word. It's valid Scrabble word worth 10 points. It's valid Words with friends word worth 10 points.
You can make 15 anagrams from letters in teff (efft).
1780-90; Amharic t’ef; compare Geez t’ah’əf, t’ayəf
About the 20th of November they reap the first barley, then the wheat, and last of all the 'teff.'
The teff is almost deserted, and near the sources of the Japur there remained but the fragments of the great nation of the Umaa.
About the 20th of November they begin to reap, first the barley, then the wheat, and lastly the teff.