Correct spelling for the English word "Scillain" is [sˈɪle͡ɪn], [sˈɪleɪn], [s_ˈɪ_l_eɪ_n] (IPA phonetic alphabet).
A glucoside from scilla or squill; diuretic in doses of gr. 1/100-1/60 (0.0006-0.001).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.