Pronunciation: [ʃˈiːld] (IPA)
Correct spelling for the English word "shealed" is [ʃˈiːld], [ʃˈiːld], [ʃ_ˈiː_l_d] (IPA phonetic alphabet).
Shelled.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.