Correct spelling for the English word "Senegin" is [sˈɛnɪd͡ʒˌɪn], [sˈɛnɪdʒˌɪn], [s_ˈɛ_n_ɪ_dʒ_ˌɪ_n] (IPA phonetic alphabet).
The active principle of senega occurring in the drug in a mixture with polygalic acid.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.