Covado, Covido : Portuguese and Arabic names, respectively, for the cubit (See below). The Portuguese covado is equal to 3 palmos (66 centimeters, or 20.12 inches), while the Arabic covido is about 48 centimeters or 19 inches
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}