Correct spelling for the English word "propeds" is [pɹˈəptz], [pɹˈəptz], [p_ɹ_ˈə_p_t_z] (IPA phonetic alphabet).
The soft foot-like appendages of certain larvae placed behind the true feet, and disappearing in the mature insects.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.