Correct spelling for the English word "bynin" is [bˈa͡ɪnɪn], [bˈaɪnɪn], [b_ˈaɪ_n_ɪ_n] (IPA phonetic alphabet).
Trade name of a malt extract said to contain about 51 per cent. of maltose, 3 per cent. each of dextrin and protein, and 8 per cent. of alcohol.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.