Correct spelling for the English word "ornamentor" is [ˈɔːnəməntˌɔː], [ˈɔːnəməntˌɔː], [ˈɔː_n_ə_m_ə_n_t_ˌɔː] (IPA phonetic alphabet).
A decorator; a finisher of articles.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.