Correct spelling for the English word "dundakine" is [dˈʌndɐkˌa͡ɪn], [dˈʌndɐkˌaɪn], [d_ˈʌ_n_d_ɐ_k_ˌaɪ_n] (IPA phonetic alphabet).
An alkaloid of Sarcocephalus esculentus; in poisonous doses it arrests respiration.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.